A303622 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 168, 1283, 19467, 350410, 6446485, 122517773, 2348299355, 45211204167, 872116776878, 16840012914187, 325325036804019, 6286301532328358, 121485138860397708, 2347880112852680240, 45377538348278054960

Offset

1,2

Comments

Column 6 of A303624.

Links

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

Example

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

Crossrefs

Cf. A303624.

Sequence in context: A235064 A070835 A112551 * A263121 A216107 A235932

Adjacent sequences: A303619 A303620 A303621 * A303623 A303624 A303625

Keyword

nonn

Author

R. H. Hardin, Apr 27 2018

Status

approved