A303251 Number of nX5 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 146, 955, 10264, 106803, 1105676, 11394429, 118856245, 1230109648, 12757693309, 132384613354, 1372891293534, 14239793474152, 147709542193598, 1532064286940632, 15891180965080859, 164830841395830095

Offset

1,1

Comments

Column 5 of A303254.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A303254.

Sequence in context: A302221 A302667 A302469 * A203759 A203312 A203742

Adjacent sequences: A303248 A303249 A303250 * A303252 A303253 A303254

Keyword

nonn

Author

R. H. Hardin, Apr 20 2018

Status

approved