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A317037
Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
0
1, 5, 14, 141, 6188, 393048, 302924053, 789775871803, 5059633703751332
OFFSET
1,2
COMMENTS
Diagonal of A317043.
EXAMPLE
Some solutions for n=5
..0..0..1..1..1. .0..0..1..1..0. .0..1..1..1..1. .0..1..0..1..0
..0..0..0..1..1. .1..0..1..0..0. .0..0..1..1..0. .0..0..1..0..0
..1..0..1..1..1. .1..0..0..0..0. .1..1..0..0..0. .1..1..1..0..0
..0..1..0..1..0. .0..1..1..0..1. .0..0..1..0..0. .0..0..1..0..0
..1..1..0..0..0. .1..1..1..1..1. .0..1..1..0..1. .1..0..1..0..1
CROSSREFS
Cf. A317043.
Sequence in context: A058072 A027304 A070135 * A317691 A067857 A027832
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 19 2018
STATUS
approved