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

A214188 Number of 0..6 colorings of a 1 X (n+1) array circular in the n+1 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

1, 1, 4, 11, 41, 162, 714, 3397, 17251, 92048, 509444, 2893683, 16734381, 97965934, 578241694, 3431848769, 20442513431, 122066210220, 730058053464, 4371040179055, 26189154314401, 156987015743306, 941331763528754
Offset: 1

Views

Author

R. H. Hardin, Jul 07 2012

Keywords

Comments

Row 1 of A214187.

Examples

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

Crossrefs

Cf. A214187.

Formula

Empirical: a(n) = 15*a(n-1) - 79*a(n-2) + 165*a(n-3) - 64*a(n-4) - 180*a(n-5) + 144*a(n-6).
Empirical g.f.: x*(1 - 14*x + 68*x^2 - 135*x^3 + 91*x^4) / ((1 - x)*(1 + x)*(1 - 2*x)*(1 - 3*x)*(1 - 4*x)*(1 - 6*x)). - Colin Barker, Mar 09 2018

A214181 Number of 0..6 colorings of an n X 3 array circular in the 3 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

1, 18, 1046, 108893, 13701111, 1808609113, 241491378451, 32332391658753, 4331663509964171, 580414863999963833, 77774694477831007731, 10421780348518296089713, 1396517647955429913843931
Offset: 1

Views

Author

R. H. Hardin, Jul 07 2012

Keywords

Comments

Column 2 of A214187.

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..0..3....3..0..1....1..2..3....1..2..3....1..2..3....1..0..3
..3..4..1....0..3..1....0..1..2....3..0..1....0..1..4....0..1..4....3..4..0
..4..0..2....1..4..0....1..0..3....4..1..5....4..2..0....1..0..5....0..5..1
		

Crossrefs

Cf. A214187.

Formula

Empirical: a(n) = 179*a(n-1) - 6468*a(n-2) + 59396*a(n-3) - 94336*a(n-4).
Conjectures from Colin Barker, Jul 22 2018: (Start)
G.f.: x*(1 - 161*x + 4292*x^2 - 21313*x^3) / ((1 - 2*x)*(1 - 11*x)*(1 - 32*x)*(1 - 134*x)).
a(n) = (2^(n-4)*(67^(n-1)+9) + 11^(n-1) + 3*2^(5*n-7))/3.
(End)

A214182 Number of 0..6 colorings of an nX4 array circular in the 4 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

4, 353, 147943, 96673866, 68272896836, 48807260151073, 34958661918205401, 25047104071770605888, 17946563397124532921734, 12859036484490635332784967, 9213742993368664938803040203, 6601822515414603719492440676662
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Column 3 of A214187

Examples

			Some solutions for n=4
..0..1..2..3....0..1..0..1....0..1..2..1....0..1..2..1....0..1..0..1
..1..3..1..4....1..0..1..2....1..0..3..4....2..3..4..5....1..0..2..0
..3..1..0..5....0..1..0..1....0..1..2..5....1..2..3..4....2..1..3..1
..5..2..3..4....3..4..5..4....6..0..1..4....5..4..0..6....4..2..1..2
		

Formula

Empirical: a(n) = 902*a(n-1) -142783*a(n-2) +7297504*a(n-3) -157308287*a(n-4) +1529846974*a(n-5) -7002462289*a(n-6) +14489273756*a(n-7) -12535263856*a(n-8) +3668758080*a(n-9)

A214183 Number of 0..6 colorings of an nX5 array circular in the 5 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

11, 7434, 21418431, 76892349394, 282135060192286, 1037404464993610934, 3815299253956873853106, 14031944174294607018138494, 51606920496933612048613391186, 189800837547185166387283413516334
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Column 4 of A214187

Examples

			Some solutions for n=4
..0..1..0..1..2....0..1..0..1..2....0..1..2..0..1....0..1..2..0..1
..1..3..4..5..4....1..2..1..0..3....1..0..1..2..3....1..3..4..1..4
..5..1..0..1..6....0..1..2..1..2....0..1..2..1..2....0..1..0..2..1
..2..4..1..4..1....1..2..3..2..3....3..4..0..5..4....1..2..3..0..2
		

Formula

Empirical: a(n) = 4178*a(n-1) -1895863*a(n-2) +209149752*a(n-3) -7928550662*a(n-4) +84119844576*a(n-5) -298704239064*a(n-6) +219967475904*a(n-7)

A214184 Number of 0..6 colorings of an n X 6 array circular in the 6 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

41, 198052, 3375824210, 63801460335656, 1213459476427300800, 23088156449777055684502, 439302572451496835864263417, 8358702906469803762741273286892, 159042821944647153392175946109898897
Offset: 1

Views

Author

R. H. Hardin, Jul 07 2012

Keywords

Comments

Column 5 of A214187.

Examples

			Some solutions for n=4
..0..1..0..1..0..1....0..1..2..0..1..2....0..1..2..0..1..2....0..1..0..1..0..1
..1..0..1..0..1..0....1..0..3..1..0..3....2..0..1..2..3..4....1..0..1..0..1..0
..0..1..0..1..0..1....0..2..4..5..3..1....0..1..2..4..2..3....0..1..0..1..2..3
..1..0..1..0..1..0....6..0..5..4..0..5....3..5..0..3..1..5....1..4..5..6..3..4
		

Crossrefs

Cf. A214187.

A214185 Number of 0..6 colorings of an nX7 array circular in the 7 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

162, 5731144, 537471327779, 52728429977071820, 5181849398711430701208, 509276783285147027391376400, 50052307567860864303157948860474, 4919198813277559761012684429315089098
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Column 6 of A214187

Examples

			Some solutions for n=4
..0..1..2..0..1..0..2....0..1..0..1..0..1..2....0..1..2..0..1..0..2
..1..0..1..2..0..1..0....1..2..1..0..1..2..3....1..0..1..2..3..1..3
..2..1..2..3..4..5..1....3..4..5..4..0..4..1....2..4..3..1..0..5..6
..3..2..5..6..3..4..5....1..3..6..1..2..6..0....1..3..4..6..1..4..0
		

A214189 Number of 0..6 colorings of a 2X(n+1) array circular in the n+1 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

4, 18, 353, 7434, 198052, 5731144, 172707247, 5290686318, 163203090770, 5048858758020, 156379568912461, 4846014558069802, 150203703987575008, 4656019290676790496, 144332757507860933195, 4474265565293272517286
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Row 2 of A214187

Examples

			Some solutions for n=4
..0..1..2..3..1....0..1..0..1..2....0..1..2..0..1....0..1..2..0..1
..2..3..0..1..0....2..3..1..0..1....3..4..5..3..6....1..2..0..1..0
		

Formula

Empirical: a(n) = 39*a(n-1) -133*a(n-2) -3905*a(n-3) +6437*a(n-4) +125497*a(n-5) +83961*a(n-6) -931595*a(n-7) -1308936*a(n-8) +809964*a(n-9) +1218672*a(n-10)

A214190 Number of 0..6 colorings of a 3X(n+1) array circular in the n+1 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

34, 1046, 147943, 21418431, 3375824210, 537471327779, 85978533129243, 13765597336821245, 2204602881329983688, 353096564867070887951, 56554251279074204230121, 9058140154145997330337181
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Row 3 of A214187

Examples

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

Formula

Empirical: a(n) = 139*a(n-1) +5515*a(n-2) -286157*a(n-3) -9529273*a(n-4) +113179647*a(n-5) +4029123791*a(n-6) -21482035001*a(n-7) -665136918315*a(n-8) +3470737828565*a(n-9) +52035528093885*a(n-10) -353663596245035*a(n-11) -1772488823978235*a(n-12) +18597082646494445*a(n-13) +6436724051209165*a(n-14) -461676350902794315*a(n-15) +989689896962549920*a(n-16) +4490761773386882420*a(n-17) -20885571816583158340*a(n-18) +2406786493445125820*a(n-19) +135386533520490778816*a(n-20) -242458279252260285504*a(n-21) -117064394722434074400*a(n-22) +741048574341017155392*a(n-23) -533060382247946111232*a(n-24) -464734745166440627712*a(n-25) +719025841858074960384*a(n-26) -101164868845572040704*a(n-27) -184396432098202951680*a(n-28) +60855200138907648000*a(n-29)

A214191 Number of 0..6 colorings of a 4X(n+1) array circular in the n+1 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

499, 108893, 96673866, 76892349394, 63801460335656, 52728429977071820, 43640411285319502254, 36112297704840189696506, 29884457546802474331953680, 24730452099783783516454127661, 20465374817193973734647830403223
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Row 4 of A214187

Examples

			Some solutions for n=4
..0..1..2..3..1....0..1..0..1..2....0..1..0..1..2....0..1..2..0..1
..2..3..0..1..0....1..2..1..2..3....1..2..1..0..3....3..4..5..3..6
..0..4..5..6..3....0..3..0..1..2....0..1..2..1..2....4..1..6..5..2
..6..5..0..4..5....1..0..1..0..3....1..2..3..2..3....6..2..1..4..5
		

A214192 Number of 0..6 colorings of a 5X(n+1) array circular in the n+1 direction with new values 0..6 introduced in row major order.

Original entry on oeis.org

10507, 13701111, 68272896836, 282135060192286, 1213459476427300800, 5181849398711430701208, 22161121532525857186165916, 94747979794440013487452463352, 405111926950578638476251757606722
Offset: 1

Views

Author

R. H. Hardin Jul 07 2012

Keywords

Comments

Row 5 of A214187

Examples

			Some solutions for n=4
..0..1..2..0..1....0..1..0..1..2....0..1..2..0..1....0..1..2..0..1
..1..2..0..1..0....2..3..2..3..0....2..0..1..2..0....1..0..1..3..2
..2..0..1..0..1....0..1..4..2..4....1..2..3..0..2....2..1..0..1..3
..0..2..3..4..5....1..0..5..3..5....0..3..4..5..1....0..3..4..5..4
..1..3..1..5..6....2..1..6..2..3....6..0..3..4..3....5..1..0..1..6
		
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