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A296956
Number of n X n 0..1 arrays with each 1 adjacent to 2, 3 or 5 king-move neighboring 1's.
0
1, 6, 60, 910, 88469, 21225209, 10777843410, 17890820040132, 82254475173275476
OFFSET
1,2
COMMENTS
Diagonal of A296963.
EXAMPLE
Some solutions for n=5
..0..1..1..0..0. .0..0..1..1..0. .1..1..0..0..0. .1..1..1..1..1
..1..1..0..0..0. .0..0..1..0..0. .1..0..1..0..0. .0..1..0..0..1
..0..0..0..0..0. .0..0..0..0..1. .0..0..0..1..1. .1..1..0..1..0
..0..1..0..0..1. .0..0..0..1..1. .0..1..0..0..1. .0..1..0..1..0
..1..1..1..1..1. .0..0..0..1..0. .1..1..1..0..0. .0..0..0..1..1
CROSSREFS
Cf. A296963.
Sequence in context: A064815 A331120 A368505 * A366335 A308332 A126574
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 22 2017
STATUS
approved