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A299575
Number of n X n 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
0
1, 1, 10, 19, 172, 2597, 61273, 6245870, 1821672943, 1399272048339
OFFSET
1,3
COMMENTS
Diagonal of A299581.
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..1. .0..0..0..1..1. .0..1..0..1..1
..0..0..0..0..0. .0..0..1..0..0. .0..0..0..1..1. .1..1..1..1..1
..1..0..0..0..1. .0..1..1..1..0. .0..1..0..1..1. .1..0..1..0..0
..0..0..0..0..0. .0..0..1..0..0. .0..0..0..1..1. .1..1..1..0..0
..1..0..1..0..1. .0..0..0..0..1. .0..0..0..1..1. .1..1..1..0..0
CROSSREFS
Cf. A299581.
Sequence in context: A293929 A177203 A177167 * A073222 A110463 A121725
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2018
STATUS
approved