A284228 Number of 7 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

64, 2719, 170155, 19371893, 2058141264, 232036495984, 26772321109067, 3148948157013672, 375099683101859897, 45101225320947864321, 5461569534638135452419, 665104722603120565892383

Offset

1,1

Comments

Row 7 of A284222.

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Cf. A284222.

Sequence in context: A203256 A265632 A144843 * A017319 A036531 A301840

Adjacent sequences: A284225 A284226 A284227 * A284229 A284230 A284231

Keyword

nonn

Author

R. H. Hardin, Mar 23 2017

Status

approved