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

A214142 Number of 0..4 colorings of a 1 X (n+1) array circular in the n+1 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

1, 1, 4, 11, 40, 147, 568, 2227, 8824, 35123, 140152, 559923, 2238328, 8950579, 35796856, 143176499, 572684152, 2290692915, 9162684280, 36650562355, 146601899896, 586406900531, 2345626204024, 9382502019891, 37530002487160
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Row 1 of A214141.

Examples

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

Formula

Empirical: a(n) = 6*a(n-1) -7*a(n-2) -6*a(n-3) +8*a(n-4).
Empirical: a(n) = 2^n/6 - 11*(-1)^n/30 + 4^n/30 + 1/6. - R. J. Mathar, Jul 07 2012
Empirical: partial sums of A110613. - Sean A. Irvine, Jul 14 2022

A214135 Number of 0..4 colorings on an nX3 array circular in the 3 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

1, 17, 514, 16388, 524296, 16777232, 536870944, 17179869248, 549755814016, 17592186044672, 562949953421824, 18014398509483008, 576460752303425536, 18446744073709555712, 590295810358705659904, 18889465931478580871168
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 2 of A214141

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
..3..2..4....3..4..0....1..0..3....3..4..1....1..0..3....1..2..0....1..3..4
..1..3..0....1..2..3....2..1..4....2..1..0....2..1..4....3..4..1....2..4..0
..2..4..1....2..1..0....3..2..0....4..0..1....1..0..2....0..1..4....0..3..2
		

Formula

Empirical: a(n) = 34*a(n-1) -64*a(n-2).
Empirical: 2^(n-2)+32^(n-1)/2. G.f. -x*(-1+17*x) / ( (32*x-1)*(2*x-1) ). - R. J. Mathar, Jul 05 2012

A214136 Number of 0..4 colorings on an nX4 array circular in the 4 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

4, 257, 28278, 3221873, 367793014, 41989913081, 4793901053846, 547309896088193, 62485254609615222, 7133814088846153097, 814453006155085388566, 92984438755466611752209, 10615843744610501570047094
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 3 of A214141

Examples

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

Formula

Empirical: a(n) = 129*a(n-1) -1759*a(n-2) +7575*a(n-3) -9064*a(n-4) +3120*a(n-5).
Empirical: G.f. -x*(4-259*x+2161*x^2-4226*x^3+1880*x^4) / ( (x-1) *(780*x^2-121*x+1) *(4*x^2-7*x+1) ). - R. J. Mathar, Jul 05 2012

A214137 Number of 0..4 colorings on an nX5 array circular in the 5 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

11, 3074, 1101051, 396246659, 142612676441, 51327630988519, 18473293023759681, 6648710425444606279, 2392932882341580821521, 861238858813625796412439, 309967896468864954647672961, 111560336436381065332976408999
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 4 of A214141

Examples

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

Formula

Empirical: a(n) = 373*a(n-1) -4754*a(n-2) +15312*a(n-3).
Empirical: G.f. -x*(11-1029*x+6743*x^2) / ( (6*x-1)*(2552*x^2-367*x+1) ). - R. J. Mathar, Jul 07 2012

A214138 Number of 0..4 colorings on an nX6 array circular in the 6 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

40, 40434, 47730973, 56449101747, 66761857485037, 78958797573536880, 93384051705843287887, 110444707138200962659230, 130622232997959101383691845, 154486060939324697852637264771
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 5 of A214141

Examples

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

Formula

Empirical: a(n) = 1343*a(n-1) -193139*a(n-2) +4182587*a(n-3) +13484773*a(n-4) -1046489341*a(n-5) +9211083518*a(n-6) -31222203012*a(n-7) +47496470136*a(n-8) -30991236576*a(n-9) +6534899712*a(n-10)

A214139 Number of 0..4 colorings on an nX7 array circular in the 7 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

147, 522515, 2000093424, 7658621867351, 29325981412599886, 112293482777565310571, 429988214977169477452677, 1646487940037763716348859705, 6304643807380348053085274173830
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 6 of A214141

Examples

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

Formula

Empirical: a(n) = 4156*a(n-1) -1272609*a(n-2) +80884549*a(n-3) -1222656178*a(n-4) -19887912212*a(n-5) +527430399664*a(n-6) -2643328241280*a(n-7) +3940919419904*a(n-8) -1580167634944*a(n-9)

A214140 Number of 0..4 colorings on an nX8 array circular in the 8 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

568, 6800539, 84746307320, 1056293079317795, 13166014293744404256, 164106209736507364778963, 2045482716827052535560126536, 25495681657765974468503864709699, 317787963043598693812170748728654192
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Column 7 of A214141

Examples

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

A214143 Number of 0..4 colorings of a 2 X (n+1) array circular in the n+1 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

4, 17, 257, 3074, 40434, 522515, 6800539, 88363628, 1148860844, 14934544493, 194151313701, 2523957115862, 32811479230534, 426549073848551, 5545138556625743, 72086798766250976, 937128393589298304
Offset: 1

Views

Author

R. H. Hardin, Jul 05 2012

Keywords

Comments

Row 2 of A214141.

Examples

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

Crossrefs

Cf. A214141.

Formula

Empirical: a(n) = 10*a(n-1) + 50*a(n-2) - 116*a(n-3) - 361*a(n-4) + 106*a(n-5) + 312*a(n-6).
Empirical: 3^n/4 +13^(n+1)/120 -(-1)^n/6 +(-2)^(n+1)/5 -2*(-4)^n/15 +41/120. - R. J. Mathar, Jul 07 2012
Empirical g.f.: x*(4 - 23*x - 113*x^2 + 118*x^3 + 260*x^4) / ((1 - x)*(1 + x)*(1 + 2*x)*(1 - 3*x)*(1 + 4*x)*(1 - 13*x)). - Colin Barker, Jul 22 2018

A214144 Number of 0..4 colorings of a 3X(n+1) array circular in the n+1 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

33, 514, 28278, 1101051, 47730973, 2000093424, 84746307320, 3577656763765, 151219261926083, 6389075487200098, 269978080214894342, 11407722800807664903, 482032317577423439601, 20368126430994060884676
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Row 3 of A214141

Examples

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

Formula

Empirical: a(n) = 29*a(n-1) +667*a(n-2) -3517*a(n-3) -48855*a(n-4) +260073*a(n-5) +877261*a(n-6) -6916959*a(n-7) +3304148*a(n-8) +50505862*a(n-9) -103934388*a(n-10) +3498864*a(n-11) +137456208*a(n-12) -66186464*a(n-13) -37655040*a(n-14) +18842112*a(n-15)

A214145 Number of 0..4 colorings of a 4X(n+1) array circular in the n+1 direction with new values 0..4 introduced in row major order.

Original entry on oeis.org

380, 16388, 3221873, 396246659, 56449101747, 7658621867351, 1056293079317795, 144866445686609006, 19906698818498055530, 2733599910467754593210, 375469153158053812612715, 51567627234474699175231066
Offset: 1

Views

Author

R. H. Hardin Jul 05 2012

Keywords

Comments

Row 4 of A214141

Examples

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

Formula

Empirical: a(n) = 98*a(n-1) +7347*a(n-2) -224778*a(n-3) -7728704*a(n-4) +262962206*a(n-5) +1393225336*a(n-6) -119191836900*a(n-7) +903246007088*a(n-8) +15160938917982*a(n-9) -275603342577492*a(n-10) +682387054022690*a(n-11) +15561944299486025*a(n-12) -115827362546126062*a(n-13) -212490962883374739*a(n-14) +4823062494960309260*a(n-15) -7095359819344029228*a(n-16) -99434265775360806832*a(n-17) +328551695701192183392*a(n-18) +1138114424426882557728*a(n-19) -6053645101474951208480*a(n-20) -6708619509298241221600*a(n-21) +65396272713151068067952*a(n-22) +5364285677369375777088*a(n-23) -453472228704354241414400*a(n-24) +214492166017309520360960*a(n-25) +2067855900666101449624832*a(n-26) -1661157783236876092106752*a(n-27) -6139414492176949529923584*a(n-28) +6192595052837124164186112*a(n-29) +11391038825017579755356160*a(n-30) -12973302568874201052119040*a(n-31) -12149182632175329849245696*a(n-32) +14864624252513466776027136*a(n-33) +6334860565035363128573952*a(n-34) -8132689024636326160367616*a(n-35) -1111349824406251383029760*a(n-36) +1495738851120218709688320*a(n-37)
Showing 1-10 of 13 results. Next