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A304301
Number of nX7 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.
1
8, 22, 22, 43, 339, 685, 2673, 11690, 31390, 133744, 470762, 1540068, 6102146, 20842217, 73878439, 275427095, 956546292, 3458032571, 12531328029, 44267349424, 160026929357, 574345404117, 2048047347778, 7378617219463
OFFSET
1,1
COMMENTS
Column 7 of A304302.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..1..0..1..0
..0..0..0..1..0..0..1. .1..0..0..1..0..1..0. .1..0..0..0..0..0..0
..1..0..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..1
..0..0..0..0..0..0..1. .0..1..0..0..0..0..1. .1..0..0..1..0..0..0
..0..1..0..0..1..0..0. .0..0..0..0..1..0..0. .0..0..0..0..0..1..0
CROSSREFS
Cf. A304302.
Sequence in context: A323593 A013630 A215600 * A236917 A064193 A301482
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 10 2018
STATUS
approved