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 1-7 of 7 results.

A284765 Number of n X 2 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

0, 4, 14, 52, 206, 772, 2896, 10996, 41862, 159836, 612572, 2354880, 9076852, 35073264, 135823868, 527012084, 2048410070, 7974173484, 31085538148, 121332433984, 474123211448, 1854631573500, 7261693567782, 28457603057044
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 2 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284766 Number of n X 3 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

1, 14, 119, 720, 5637, 38792, 298003, 2180148, 16717575, 125826436, 966619242, 7382318636, 56924033734, 438478307376, 3394276530311, 26291371821860, 204232995801978, 1588199807894658, 12373790849896599, 96512252060362420
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 3 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284767 Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

2, 52, 720, 10120, 145822, 2134812, 31677488, 474539092, 7162528912, 108751977400, 1659266548448, 25419213710160, 390755520225882, 6024619021179564, 93124153758520074, 1442654093474307468
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 4 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284768 Number of n X 5 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

6, 206, 5637, 145822, 4219759, 121021322, 3595841703, 107047691558, 3230133817408, 97858271141246, 2984356113230844, 91344755158599286, 2807007399506811549, 86507823542467916384, 2673333189589167211891
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 5 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284769 Number of n X 6 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

12, 772, 38792, 2134812, 121021322, 7032604532, 415218866820, 24791001439744, 1492759389444440, 90482039904046564, 5513803407272591036, 337477786522832860972, 20731570783539196500470, 1277528701244695326636560
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 6 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284770 Number of n X 7 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

28, 2896, 298003, 31677488, 3595841703, 415218866820, 48994677634459, 5840008221148574, 702889504624919147, 85151294479167806690, 10373863251897460544155, 1269424721127000908485982
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Column 7 of A284771.

Examples

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

Links

Crossrefs

Cf. A284771.

A284764 Number of n X n 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

0, 4, 119, 10120, 4219759, 7032604532, 48994677634459, 1392340919671593156
Offset: 1

Views

Author

R. H. Hardin, Apr 02 2017

Keywords

Comments

Diagonal of A284771.

Examples

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

Crossrefs

Cf. A284771.
Showing 1-7 of 7 results.

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