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A316276
Number of nXn 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
0
0, 7, 125, 9540, 1820908, 1000914270, 1545539179382, 6744089252983902, 83045349878880145528
OFFSET
1,2
COMMENTS
Diagonal of A316282.
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0
..1..1..0..0..1. .0..1..1..0..1. .0..1..0..0..1. .1..0..0..1..0
..0..1..1..1..0. .1..0..1..1..1. .1..1..1..0..1. .0..1..0..1..1
..1..0..1..0..1. .1..0..0..0..1. .0..1..0..1..1. .1..1..0..0..1
..0..0..0..1..0. .0..1..0..0..1. .1..1..0..0..0. .0..1..0..1..1
CROSSREFS
Cf. A316282.
Sequence in context: A360337 A304420 A217910 * A220615 A113162 A180583
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 28 2018
STATUS
approved