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 11 results. Next

A303308 Number of n X n 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

1, 3, 12, 36, 139, 1221, 26184, 746323, 23967605, 1285074158, 140135122490, 23444843868325, 5152091496332058, 1785689257359207106, 1097023324108868377427, 1066418515771155179484946
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Diagonal of A303314.

Examples

			Some solutions for n=5
..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..0..1..0..1
..0..1..0..1..0. .0..1..0..0..0. .0..1..0..0..0. .1..1..1..0..1
..0..1..1..1..0. .0..1..0..1..0. .0..1..0..1..0. .1..0..1..0..1
..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .1..0..1..0..1
..0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0. .1..0..1..0..1
		

Crossrefs

Cf. A303314.

A303309 Number of nX3 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

3, 3, 12, 11, 19, 34, 53, 83, 136, 223, 359, 578, 937, 1519, 2456, 3971, 6427, 10402, 16829, 27227, 44056, 71287, 115343, 186626, 301969, 488599, 790568, 1279163, 2069731, 3348898, 5418629, 8767523, 14186152, 22953679, 37139831, 60093506
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Column 3 of A303314.

Examples

			Some solutions for n=5
..0..1..0. .0..1..0. .0..1..0. .0..0..1. .0..1..1. .0..0..0. .0..0..0
..0..1..0. .0..1..0. .0..1..0. .1..1..1. .0..0..0. .0..1..0. .0..1..0
..0..1..0. .0..0..0. .0..1..0. .1..0..1. .0..1..0. .0..1..0. .0..1..0
..0..1..0. .1..1..1. .0..0..0. .1..0..1. .0..1..0. .0..0..0. .0..1..0
..0..0..0. .1..0..1. .0..1..1. .1..0..1. .0..0..0. .1..1..0. .0..1..0
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +a(n-3) +a(n-4) for n>7

A303310 Number of nX4 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

5, 5, 17, 36, 74, 165, 361, 783, 1710, 3744, 8176, 17851, 39009, 85239, 186206, 406800, 888794, 1941803, 4242301, 9268393, 20249240, 44239542, 96652372, 211161719, 461336399, 1007905991, 2202025876, 4810883806, 10510594448, 22963055655
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Column 4 of A303314.

Examples

			Some solutions for n=5
..0..0..0..1. .0..1..1..1. .0..1..0..0. .0..1..0..1. .0..1..1..1
..0..1..0..1. .0..1..0..1. .0..1..1..1. .0..0..0..1. .0..1..0..1
..0..1..0..1. .0..0..0..1. .0..1..0..1. .0..1..0..1. .0..1..0..1
..0..1..0..1. .0..1..1..1. .0..1..0..1. .0..1..1..1. .0..1..0..1
..0..1..0..1. .0..1..0..0. .0..1..0..1. .0..1..0..0. .0..0..0..1
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +a(n-2) +3*a(n-3) +2*a(n-4) -a(n-5) -2*a(n-6) -a(n-7) for n>10

A303311 Number of nX5 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

8, 7, 24, 50, 139, 349, 853, 2180, 5525, 13824, 34900, 88161, 221923, 559409, 1411020, 3556271, 8964218, 22600998, 56974213, 143622769, 362071261, 912756908, 2300972077, 5800604608, 14622927344, 36863258801, 92929626827, 234268970653
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Column 5 of A303314.

Examples

			Some solutions for n=5
..0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..0..0..1..0
..0..1..0..1..0. .0..0..1..1..0. .0..1..0..1..0. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..0..0..1..0
..0..1..1..1..0. .0..0..0..1..0. .0..1..0..1..0. .1..1..0..1..0
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +9*a(n-3) +2*a(n-4) +4*a(n-5) -10*a(n-6) -6*a(n-7) +4*a(n-9) for n>12

A303312 Number of nX6 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

13, 13, 67, 128, 410, 1221, 3453, 10223, 30247, 88071, 257997, 758575, 2222443, 6510901, 19099863, 56003627, 164158635, 481322825, 1411283805, 4137560893, 12130815503, 35567022201, 104278542849, 305732562651, 896380484697
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Column 6 of A303314.

Examples

			Some solutions for n=5
..0..1..0..1..1..1. .0..1..0..1..0..1. .0..1..0..1..0..1. .0..1..1..1..0..1
..0..1..0..1..0..1. .0..0..1..1..0..1. .0..1..0..1..0..1. .0..1..0..1..0..1
..0..1..0..1..0..1. .0..1..0..1..0..1. .0..0..0..1..0..1. .0..1..0..0..0..1
..0..0..1..1..0..1. .0..1..0..1..0..1. .0..1..0..1..1..1. .0..1..0..1..1..1
..0..1..0..1..0..1. .0..1..0..1..1..1. .0..1..0..1..0..1. .0..1..0..1..0..1
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +2*a(n-2) +10*a(n-3) +6*a(n-4) -5*a(n-5) -15*a(n-6) -8*a(n-7) -4*a(n-8) for n>11

A303313 Number of nX7 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

21, 23, 158, 439, 1799, 7096, 26184, 100128, 387892, 1473950, 5617780, 21537368, 82283698, 314136752, 1201134460, 4591062616, 17541004106, 67038118694, 256214474112, 979116873266, 3741800363318, 14300090089956, 54649561868376
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Column 7 of A303314.

Examples

			Some solutions for n=5
..0..1..0..1..0..0..0. .0..1..0..1..0..1..0. .0..0..1..0..1..0..1
..0..1..1..1..0..1..0. .0..1..0..0..0..1..0. .1..1..1..0..1..0..1
..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .1..0..1..0..1..1..1
..0..0..0..1..0..1..0. .0..1..1..1..0..1..0. .1..0..1..0..1..0..1
..1..1..0..1..0..0..0. .0..1..0..1..0..1..0. .1..1..1..0..1..0..1
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +a(n-2) +36*a(n-3) +23*a(n-4) +15*a(n-5) -252*a(n-6) -288*a(n-7) -81*a(n-8) +830*a(n-9) +496*a(n-10) +172*a(n-11) -720*a(n-12) -184*a(n-13) -396*a(n-14) +352*a(n-15) -248*a(n-16) +112*a(n-17) -176*a(n-18) -64*a(n-20) for n>23

A303315 Number of 3Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

4, 4, 12, 17, 24, 67, 158, 298, 595, 1337, 2863, 5840, 12231, 26168, 55140, 115193, 242621, 512713, 1078852, 2267487, 4776110, 10063518, 21181387, 44579665, 93874659, 197672892, 416137435, 876080072, 1844597384, 3883701257, 8176491213
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Row 3 of A303314.

Examples

			Some solutions for n=5
..0..1..0..0..1. .0..1..0..1..0. .0..1..0..1..1. .0..0..0..1..0
..0..1..1..1..1. .0..1..1..0..0. .0..1..0..0..0. .0..1..0..1..0
..0..1..0..0..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +3*a(n-3) +4*a(n-4) for n>7

A303316 Number of 4Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

8, 6, 11, 36, 50, 128, 439, 1085, 2431, 6452, 17455, 43514, 108524, 281615, 726261, 1839731, 4685152, 12025643, 30754258, 78396104, 200278695, 512290781, 1308785863, 3342222476, 8540451095, 21826102586, 55761123412, 142456533311
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Row 4 of A303314.

Examples

			Some solutions for n=5
..0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..0..0
..0..1..1..1..0. .0..0..0..1..0. .0..0..0..1..0. .0..1..0..1..1
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +a(n-2) +5*a(n-3) +9*a(n-4) -3*a(n-5) -7*a(n-6) -2*a(n-7) for n>11

A303317 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

16, 9, 19, 74, 139, 410, 1799, 5907, 16494, 53290, 184915, 593160, 1846238, 5986532, 19644799, 63120477, 201894029, 652765881, 2113653016, 6806905917, 21913260238, 70736938785, 228339832475, 736091706666, 2373144545904, 7656031069031
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Row 5 of A303314.

Examples

			Some solutions for n=5
..0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0. .0..0..0..1..0
..0..0..0..1..0. .0..1..0..1..0. .0..1..1..1..0. .0..1..0..1..0
..0..1..1..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
..0..1..0..0..0. .0..0..0..1..0. .0..1..0..0..0. .0..1..0..0..0
..0..1..0..1..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = 2*a(n-1) -a(n-2) +11*a(n-3) +21*a(n-4) -13*a(n-5) +5*a(n-6) -37*a(n-7) -34*a(n-8) +4*a(n-9) -20*a(n-10) +18*a(n-11) -7*a(n-12) for n>16

A303318 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

32, 14, 34, 165, 349, 1221, 7096, 30280, 102683, 403872, 1783894, 7248640, 27856927, 111871711, 461547267, 1859721535, 7397094062, 29793428041, 120739708314, 486065859963, 1951092593903, 7859276232228, 31701254570200, 127635189909079
Offset: 1

Views

Author

R. H. Hardin, Apr 21 2018

Keywords

Comments

Row 6 of A303314.

Examples

			Some solutions for n=5
..0..1..1..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..1
..0..1..0..1..0. .0..1..0..1..0. .0..1..1..0..0. .0..1..0..0..0
..0..0..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..1..1..0
..0..1..1..1..0. .0..0..0..1..0. .0..1..0..1..0. .0..1..0..1..0
..0..1..0..0..0. .0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..1..1..1..0. .0..1..0..1..0
		

Crossrefs

Cf. A303314.

Formula

Empirical: a(n) = a(n-1) +3*a(n-2) +18*a(n-3) +87*a(n-4) +23*a(n-5) -149*a(n-6) -305*a(n-7) -678*a(n-8) -45*a(n-9) +981*a(n-10) +937*a(n-11) +1834*a(n-12) +317*a(n-13) -1968*a(n-14) -1457*a(n-15) -2157*a(n-16) -964*a(n-17) +830*a(n-18) +254*a(n-19) +161*a(n-20) +152*a(n-21) -15*a(n-22) -3*a(n-23) for n>28
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