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A317895
Number of nX7 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
0, 45, 1074, 25169, 741031, 20734591, 580702029, 16327953218, 458323749120, 12865640919987, 361242608740754, 10141976947455132, 284740846034105659, 7994281018770192184, 224444092268529045038, 6301399036645662384611
OFFSET
1,2
COMMENTS
Column 7 of A317896.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..1..0. .0..1..0..0..1..1..0. .0..1..0..1..1..0..1
..1..0..1..1..1..1..1. .1..0..1..1..0..0..1. .1..0..0..1..0..0..0
..0..0..1..0..0..1..0. .0..1..0..0..1..1..0. .0..1..1..0..1..1..0
..1..1..1..0..1..1..0. .1..0..0..0..1..0..1. .0..1..0..0..1..0..1
..0..1..0..1..0..0..1. .0..1..1..1..0..1..0. .0..1..1..0..0..1..0
CROSSREFS
Cf. A317896.
Sequence in context: A010997 A163721 A292209 * A282929 A177728 A265615
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 10 2018
STATUS
approved