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A317124
Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
1
64, 1709, 17966, 258241, 3982123, 64566869, 1062867065, 17593640188, 292154717629, 4857706850275, 80811430420141, 1344642018311307, 22376108531437995, 372374332797700997, 6197024056292073136
OFFSET
1,1
COMMENTS
Column 7 of A317125.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..1..0. .0..0..0..0..0..0..1. .0..0..1..0..0..0..0
..0..0..0..1..0..0..0. .0..0..0..1..0..1..1. .0..0..0..0..0..1..0
..0..0..0..0..0..0..0. .0..0..0..1..0..0..1. .0..0..0..1..0..0..1
..0..0..0..0..1..1..0. .0..0..0..0..0..0..0. .0..0..0..0..0..1..0
..0..1..0..0..0..0..0. .0..0..0..0..1..0..1. .0..0..0..1..0..0..0
CROSSREFS
Cf. A317125.
Sequence in context: A304309 A316208 A305775 * A305592 A317010 A316875
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 21 2018
STATUS
approved