A303628 Number of 6Xn 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.

32, 10, 2520, 10741, 398859, 6446485, 179884814, 4470005178, 122594183754, 3358212405222, 93494167786193, 2615702793245652, 73423169266382719, 2065363849547312414, 58153976434030392443, 1638589480520177365526

Offset

1,1

Comments

Row 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..1..1. .0..0..0..0..1. .0..0..0..1..0
..0..0..0..0..1. .0..0..0..1..1. .0..0..0..0..0. .0..0..0..1..0
..1..1..0..0..0. .1..1..1..0..0. .0..0..1..0..0. .0..0..1..1..1
..1..1..1..0..0. .1..1..1..0..0. .0..1..1..1..1. .0..0..0..1..0
..1..1..1..1..1. .0..0..0..0..0. .0..0..1..1..0. .0..0..1..1..0
..0..1..0..1..1. .1..0..1..0..0. .0..0..0..1..1. .0..0..0..1..1

Crossrefs

Cf. A303624.

Sequence in context: A302372 A303088 A302893 * A070616 A079809 A070629

Adjacent sequences: A303625 A303626 A303627 * A303629 A303630 A303631

Keyword

nonn

Author

R. H. Hardin, Apr 27 2018

Status

approved