cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 13 results. Next

A214167 Number of 0..5 colorings of a 1 X (n+1) array circular in the n+1 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

1, 1, 4, 11, 41, 161, 694, 3151, 14851, 71621, 350384, 1729091, 8577661, 42686281, 212828074, 1062335831, 5306276471, 26515196141, 132527465764, 662491871371, 3312023159281, 16558807553201, 82790113735454, 413938797983711
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Row 1 of A214166.

Examples

			Some solutions for n=8
..0..1..0..2..0..1..0..1..2........0..1..0..1..0..1..0..2..3
		

Crossrefs

Cf. A214166.

Formula

Empirical: a(n) = 10*a(n-1) -30*a(n-2) +20*a(n-3) +31*a(n-4) -30*a(n-5).
Empirical: a(n) = 2^n/9 +3/16 -53*(-1)^n/144 +3^n/16 +5^n/144. - R. J. Mathar, Jul 09 2012
Empirical: G.f.: x*(1 - 9*x + 24*x^2 - 19*x^3) / ((1 - x)*(1 + x)*(1 - 2*x)*(1 - 3*x)*(1 - 5*x)). - Colin Barker, Apr 22 2019

A214160 Number of 0..5 colorings of an n X 3 array circular in the 3 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

1, 18, 902, 60320, 4242606, 300785428, 21350933122, 1515863103360, 107625695720486, 7641417965382188, 542540604803692842, 38520382162939430200, 2734947125009349378766, 194181245781510954496548
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Column 2 of A214166.

Examples

			Some solutions for n=4:
..0..1..2....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2
..1..0..3....1..2..3....2..0..1....1..0..3....2..3..0....2..0..1....2..3..0
..2..3..0....3..4..5....0..2..3....2..3..4....3..2..4....0..1..2....3..4..1
..4..2..3....4..0..1....1..0..4....3..2..5....5..0..2....1..2..3....0..3..4
		

Crossrefs

Cf. A214166.

Formula

Empirical: a(n) = 84*a(n-1) - 945*a(n-2) + 1562*a(n-3).
Conjectures from Colin Barker, Jul 22 2018: (Start)
G.f.: x*(1 - 66*x + 335*x^2) / ((1 - 2*x)*(1 - 11*x)*(1 - 71*x)).
a(n) = (781*2^n + 213*11^n + 11*71^n)/4686.
(End)

A214161 Number of 0..5 colorings of an nX4 array circular in the 4 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

4, 337, 88261, 27240856, 8548472292, 2687052137887, 844765198701963, 265584804041291390, 83497056404973808506, 26250596837942857641941, 8252911849410478325131985, 2594628782449337737766700740
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 3 of A214166

Examples

			Some solutions for n=4
..0..1..0..1....0..1..2..1....0..1..0..1....0..1..0..1....0..1..2..1
..1..2..1..0....3..0..1..4....1..2..1..0....1..2..1..2....1..2..0..2
..0..1..2..1....5..1..3..1....0..1..0..1....0..1..0..3....2..3..4..3
..1..0..3..4....0..2..5..2....2..3..1..4....3..0..1..4....1..2..3..2
		

Formula

Empirical: a(n) = 370*a(n-1) -18411*a(n-2) +297448*a(n-3) -1839799*a(n-4) +4424682*a(n-5) -4113757*a(n-6) +1249468*a(n-7)

A214162 Number of 0..5 colorings of an nX5 array circular in the 5 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

11, 5994, 7386816, 9601970064, 12515731371696, 16315987753015584, 21270302008568180976, 27728993363693782195104, 36148856155531924044881856, 47125396349621619644425127424, 61434944764676706345697115017536
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 4 of A214166

Examples

			Some solutions for n=4
..0..1..0..1..2....0..1..0..2..1....0..1..0..2..1....0..1..0..2..1
..1..0..3..4..5....1..2..1..0..2....3..0..1..4..0....3..4..2..3..5
..2..5..4..1..3....2..1..0..1..0....1..2..3..5..3....2..3..1..0..3
..1..0..5..0..4....0..2..1..2..3....2..3..5..0..4....3..2..3..4..5
		

Formula

Empirical: a(n) = 1402*a(n-1) -130492*a(n-2) +2979072*a(n-3) -15573492*a(n-4) +12571416*a(n-5)

A214163 Number of 0..5 colorings of an nX6 array circular in the 6 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

41, 121778, 655418810, 3598372134742, 19767477649307133, 108593596081040129576, 596564503952723786971771, 3277257831775251397259797443, 18003784721017105359528889265663
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 5 of A214166

Examples

			Some solutions for n=4
..0..1..0..2..0..2....0..1..0..1..0..1....0..1..0..1..0..1....0..1..2..0..1..2
..1..2..1..0..1..0....1..0..1..2..3..2....1..2..3..4..5..2....3..4..3..4..3..4
..2..0..2..1..0..1....0..1..0..3..0..1....2..1..2..0..1..3....0..5..1..3..4..5
..0..3..1..2..1..2....1..0..1..4..3..2....3..4..1..5..0..5....1..0..2..5..3..2
		

Formula

Empirical: a(n) = 6132*a(n-1) -3622685*a(n-2) +639575585*a(n-3) -32725270678*a(n-4) -553035058681*a(n-5) +76503305094012*a(n-6) -1866677899327574*a(n-7) +18043405701458099*a(n-8) -65572684928670422*a(n-9) +19819882367968339*a(n-10) +446791452135464749*a(n-11) -1165335596737363580*a(n-12) +1235162915085727931*a(n-13) -587321247683006226*a(n-14) +100202633777025000*a(n-15)

A214164 Number of 0..5 colorings of an n X 7 array circular in the 7 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

161, 2518082, 57661437162, 1329144373535118, 30641183868207736684, 706382104106337182164466, 16284478223702596964357330050, 375411876384812451087810828058116, 8654503693390754657539965573882444070
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Column 6 of A214166.

Examples

			Some solutions for n=4
..0..1..0..1..0..1..2....0..1..0..1..0..2..1....0..1..0..2..1..2..1
..1..0..3..4..1..5..4....1..0..3..0..4..5..2....1..0..1..0..3..0..2
..3..2..1..0..2..3..5....2..1..2..1..3..2..5....4..5..0..2..4..3..5
..0..5..2..3..4..5..1....3..0..5..4..0..1..2....3..2..4..5..0..5..4
		

Crossrefs

Cf. A214166.

A214165 Number of 0..5 colorings of an nX8 array circular in the 8 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

694, 52655411, 5087962926669, 492753586040903004, 47722695249517610885338, 4621896758477880499809354705, 447626221877601232419684702588971, 43352165798859376240186495742633390406
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 7 of A214166

Examples

			Some solutions for n=4
..0..1..2..0..1..3..2..1....0..1..0..1..0..1..0..1....0..1..2..0..1..2..0..2
..1..2..0..2..0..4..3..2....1..0..1..0..1..0..1..0....2..3..4..3..2..3..4..3
..0..5..1..3..1..0..4..5....0..1..0..1..0..1..2..1....4..0..5..0..4..5..3..0
..3..2..4..0..3..2..5..1....3..2..4..5..1..2..4..2....5..4..3..1..5..3..0..1
		

A214168 Number of 0..5 colorings of a 2 X (n+1) array circular in the n+1 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

4, 18, 337, 5994, 121778, 2518082, 52655411, 1103993538, 23172461572, 486537381066, 10216717221605, 214546979103002, 4505458523356886, 94614430060611570, 1986901652087170519, 41724924973226947986
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Row 2 of A214166.

Examples

			Some solutions for n=4
..0..1..0..2..1....0..1..0..2..1....0..1..0..1..2....0..1..0..1..2
..1..2..1..0..2....2..3..1..4..5....1..0..1..0..3....2..3..1..0..3
		

Crossrefs

Cf. A214166.

Formula

Empirical: a(n) = 21*a(n-1) +49*a(n-2) -959*a(n-3) -1869*a(n-4) +7679*a(n-5) +15051*a(n-6) -6741*a(n-7) -13230*a(n-8).

A214169 Number of 0..5 colorings of a 3X(n+1) array circular in the n+1 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

34, 902, 88261, 7386816, 655418810, 57661437162, 5087962926669, 448703414185598, 39577633233692734, 3490791894924911324, 307895065966510710253, 27156913603466334950340, 2395291575734302273574146
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Row 3 of A214166

Examples

			Some solutions for n=4
..0..1..0..1..2....0..1..0..1..2....0..1..0..1..2....0..1..2..0..2
..1..2..3..4..5....1..0..1..0..3....3..0..3..2..0....1..2..0..2..0
..3..1..2..3..2....0..1..3..4..5....4..5..0..1..2....2..1..2..0..1
		

Formula

Empirical: a(n) = 67*a(n-1) +2324*a(n-2) -31516*a(n-3) -823431*a(n-4) +5444061*a(n-5) +84228790*a(n-6) -593193810*a(n-7) -2829906471*a(n-8) +29361035421*a(n-9) -5920653848*a(n-10) -514810627672*a(n-11) +1189252868407*a(n-12) +2543264898611*a(n-13) -12441462957938*a(n-14) +7044950862694*a(n-15) +29864975550776*a(n-16) -43278546127280*a(n-17) -9805436044288*a(n-18) +45301498197024*a(n-19) -13250017912320*a(n-20) -11125130457600*a(n-21) +4451355648000*a(n-22)

A214170 Number of 0..5 colorings of a 4X(n+1) array circular in the n+1 direction with new values 0..5 introduced in row major order.

Original entry on oeis.org

481, 60320, 27240856, 9601970064, 3598372134742, 1329144373535118, 492753586040903004, 182508906398089690646, 67614933558322223144909, 25048058118791067878253362, 9279244320912899057589246569
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Row 4 of A214166

Examples

			Some solutions for n=4
..0..1..0..2..1....0..1..0..1..2....0..1..0..1..2....0..1..2..0..2
..3..0..1..4..0....1..0..1..3..4....3..4..1..0..4....1..2..0..1..0
..1..2..3..5..3....5..1..3..4..0....1..2..5..3..0....2..0..1..2..1
..2..3..5..0..4....3..5..0..3..1....4..5..2..4..1....1..2..0..1..0
		

Formula

Empirical: a(n) = 277*a(n-1) +43286*a(n-2) -2659438*a(n-3) -247552690*a(n-4) +15445535842*a(n-5) +378986814741*a(n-6) -41802904989833*a(n-7) +452136042474059*a(n-8) +37745121338597793*a(n-9) -1312908717874384816*a(n-10) +5662284171252865408*a(n-11) +487384219869834135642*a(n-12) -10027224580129558563642*a(n-13) +14339778610757445933079*a(n-14) +1899433585303419714991789*a(n-15) -22096359729413677525535217*a(n-16) -59747454109988233376504259*a(n-17) +2899710792221918368633032176*a(n-18) -12961442792755508539331180352*a(n-19) -159276486061750814949755817012*a(n-20) +1634513898185282991490903011788*a(n-21) +2733996797125545002290448378971*a(n-22) -93207823422400944994434548752871*a(n-23) +160998458083808166242080594378480*a(n-24) +3218905046802306077029605797078840*a(n-25) -12846143896797099699079740657840240*a(n-26) -71860494424010621916228517082962880*a(n-27) +464299800201572251933647797290851460*a(n-28) +1001916812997383982866523956689702972*a(n-29) -10906121270563887216322639028025830462*a(n-30) -6315064194111875008785206163859478058*a(n-31) +182618481943930957271823235466156033113*a(n-32) -60485628555199165496393442749718077853*a(n-33) -2264863664213866820644913036681924081874*a(n-34) +2079804539690252645675385713518973078426*a(n-35) +21170196581391705091748455784331175137702*a(n-36) -28009667248192849172565224227412794564486*a(n-37) -150031989914906418524134597082694935892201*a(n-38) +242736807842917192841567535322040960386317*a(n-39) +804241887072646164399666151037785533933423*a(n-40) -1487316510567967618095661875030103655981955*a(n-41) -3227143497836886772630706041169676107503032*a(n-42) +6637638975189405881033422037600715671046504*a(n-43) +9494380902775814929613889525335452667512290*a(n-44) -21719397335987856220602442113660467807780802*a(n-45) -19698436969786699405222628792642709966808401*a(n-46) +51748904197109608336742680202521041053166933*a(n-47) +26506952024513766267253830604316482574793681*a(n-48) -88026748768847574609268991016264654472362765*a(n-49) -17578249507568180155526678746547605674765252*a(n-50) +102951503346567472492109991981177866792382180*a(n-51) -6123583820349761007383977816623868973023680*a(n-52) -77059197118065798200937539036284244973873000*a(n-53) +22349393646531554536066873948810587741479025*a(n-54) +31398894159243368095450987849881943169380875*a(n-55) -16920614421076076098156719604842643929521250*a(n-56) -3552539265607055719326189486774889086618750*a(n-57) +4434355549407340311154873493361574298625000*a(n-58) -1108482756658905013731047621862564586875000*a(n-59) +89658699336304082815270294826636175000000*a(n-60)
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