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.

A284107 Number of n X 2 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

2, 4, 13, 46, 160, 571, 2095, 7802, 29326, 111040, 422862, 1617611, 6210935, 23922207, 92387315, 357629430, 1387192894, 5390374430, 20979391112, 81768490420, 319107181678, 1246785919174, 4876478734046, 19091509694075
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 2 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284108 Number of n X 3 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

3, 13, 25, 435, 1230, 20275, 67957, 1057769, 4091201, 57977326, 251405237, 3267210309, 15553103766, 187647577263, 965234391129, 10933376520347, 60012823834203, 644348267987097, 3735767137025182, 38329302231936856
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 3 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284109 Number of n X 4 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

6, 46, 435, 5896, 80200, 1143533, 16442183, 240146980, 3538905880, 52568393480, 785872613710, 11812436439395, 178382105544907, 2704771593353921, 41159406062915663, 628343298365437332, 9619941922149572518
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 4 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284110 Number of n X 5 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

10, 160, 1230, 80200, 905327, 61595318, 835390074, 51786529350, 809052347723, 45439256969227, 794944298301218, 40943771868824816, 785978026788227426, 37601651099754921818, 779704805295540859956, 35038029006397610068684
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 5 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284111 Number of n X 6 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

19, 571, 20275, 1143533, 61595318, 3514396333, 202053817163, 11804599876991, 696189477669561, 41397421665690592, 2478089134627067931, 149178023741969838411, 9023810344121753702370, 548148352070756658354415
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 6 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284112 Number of n X 7 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

33, 2095, 67957, 16442183, 835390074, 202053817163, 12336109217951, 2717300368732547, 189648871247418668, 38157272354610084376, 2957145586181369921070, 550690134528386541356991
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Column 7 of A284113.

Examples

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

Links

Crossrefs

Cf. A284113.

A284106 Number of n X n 0..1 arrays with the number of 1's king-move adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Original entry on oeis.org

1, 4, 25, 5896, 905327, 3514396333, 12336109217951, 635264284970617848, 46214926085757662096414
Offset: 1

Views

Author

R. H. Hardin, Mar 20 2017

Keywords

Comments

Diagonal of A284113.

Examples

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

Crossrefs

Cf. A284113.
Showing 1-7 of 7 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.