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A304549
Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
1
1, 272, 749, 12281, 127607, 1368963, 16063367, 183955750, 2091952988, 24171750958, 277553198072, 3190136513649, 36716678813326, 422284655045291, 4857766186249146, 55888831842122530, 642944889250837908
OFFSET
1,2
COMMENTS
Column 6 of A304551.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..1..1. .0..1..1..1..1..1. .0..0..0..0..0..1. .0..0..1..0..0..1
..1..1..0..0..0..0. .1..0..1..0..0..0. .1..1..1..1..0..1. .0..0..1..0..0..1
..1..0..1..1..0..1. .0..0..0..1..1..1. .0..1..1..0..0..1. .1..1..0..0..1..0
..0..1..1..1..1..0. .1..0..1..1..1..1. .0..1..1..0..0..1. .1..1..1..0..0..1
..0..1..0..0..0..1. .0..1..1..0..0..0. .1..0..1..0..1..0. .0..0..1..1..0..1
CROSSREFS
Cf. A304551.
Sequence in context: A133514 A235293 A270302 * A316374 A306134 A317269
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 14 2018
STATUS
approved