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A316177
Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.
0
1, 8, 134, 3653, 168051, 14569771, 2280994876, 658322110177, 351724619629025, 348538706870343133, 641870813261257824216
OFFSET
1,2
COMMENTS
Diagonal of A316183.
EXAMPLE
Some solutions for n=5
..0..0..1..1..0. .0..0..0..1..0. .0..0..0..0..1. .0..0..0..1..1
..0..0..0..1..1. .1..1..1..1..0. .0..1..0..0..1. .1..1..1..1..1
..1..0..0..0..1. .1..0..1..1..0. .0..0..0..0..0. .1..1..1..1..1
..1..1..0..0..1. .1..1..1..1..1. .0..0..0..0..0. .1..1..1..1..0
..1..1..1..0..0. .1..0..0..0..0. .1..1..1..0..1. .1..1..1..1..0
CROSSREFS
Cf. A316183.
Sequence in context: A281948 A128287 A221545 * A003375 A007032 A215553
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 25 2018
STATUS
approved