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A297518
Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.
1
13, 529, 5079, 85843, 1671315, 25184119, 424461759, 7287075949, 119542912709, 2002902791701, 33647370739993, 560607123996981, 9377445295667227, 156927250471302049, 2622103739185322411, 43845148158283369263
OFFSET
1,1
COMMENTS
Column 7 of A297519.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..1..0..1..1. .0..0..0..1..0..0..0. .1..1..0..1..0..1..0
..1..1..0..1..0..0..0. .0..1..1..0..0..0..0. .1..0..1..1..0..1..1
..1..0..0..1..0..1..0. .0..1..0..0..1..0..0. .0..0..0..0..0..1..0
..0..0..1..0..0..0..1. .0..0..0..0..1..1..1. .0..1..1..0..0..0..0
CROSSREFS
Cf. A297519.
Sequence in context: A174564 A300525 A295942 * A281055 A030256 A023332
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 31 2017
STATUS
approved