A297653 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.

37, 6757, 268655, 16899640, 1075678445, 63350980838, 3863740405975, 234680441414485, 14203234114710492, 861618662716079824, 52240779255897230595, 3167041273737179764100, 192025471018913375268462

Offset

1,1

Comments

Column 7 of A297654.

Links

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

Example

Some solutions for n=2
..1..1..0..1..0..1..1. .1..1..0..1..1..0..1. .0..1..0..0..0..1..1
..0..0..1..0..0..1..0. .0..0..1..1..0..1..1. .0..0..1..1..1..1..1

Crossrefs

Cf. A297654.

Sequence in context: A221034 A221498 A296687 * A273196 A131272 A219105

Adjacent sequences: A297650 A297651 A297652 * A297654 A297655 A297656

Keyword

nonn

Author

R. H. Hardin, Jan 02 2018

Status

approved