A302379 Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 601, 19215, 688999, 24209608, 849467774, 29810775827, 1046322460741, 36721875744312, 1288827132390554, 45233709428352478, 1587559744275242497, 55718309872991118443, 1955535868305591162950, 68633103774355479650841

Offset

1,1

Comments

Column 6 of A302381.

Links

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

Example

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

Crossrefs

Cf. A302381.

Sequence in context: A093941 A072952 A179634 * A303100 A302951 A208298

Adjacent sequences: A302376 A302377 A302378 * A302380 A302381 A302382

Keyword

nonn

Author

R. H. Hardin, Apr 06 2018

Status

approved