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A298776
Number of n X n 0..1 arrays with every element equal to 0, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
0
1, 1, 6, 4, 37, 562, 9889, 1477645, 403292040, 309941364263
OFFSET
1,3
COMMENTS
Diagonal of A298782.
EXAMPLE
Some solutions for n=5
..0..0..0..1..1. .0..1..1..1..1. .0..0..1..0..0. .0..0..1..0..1
..0..0..0..1..1. .1..1..0..1..1. .0..0..0..0..0. .0..0..0..0..0
..1..1..1..0..0. .1..0..0..0..1. .1..1..1..1..1. .1..1..1..0..1
..1..1..1..0..0. .1..1..0..1..1. .1..1..1..1..1. .1..1..1..0..0
..1..1..1..0..0. .1..1..1..1..1. .1..1..1..1..1. .1..1..1..0..0
CROSSREFS
Cf. A298782.
Sequence in context: A163934 A163939 A038258 * A114330 A098657 A126936
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2018
STATUS
approved