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A295936
Number of n X n 0..1 arrays with each 1 adjacent to 1 or 3 king-move neighboring 1's.
0
1, 8, 41, 534, 29081, 1806751, 279143247, 117889600265, 88388227122806, 148870684494729283, 583554206857942919950
OFFSET
1,2
COMMENTS
Diagonal of A295943.
EXAMPLE
Some solutions for n=5
..1..0..0..0..0. .0..1..0..0..0. .0..0..0..1..1. .0..0..0..1..1
..1..0..0..0..0. .0..1..0..1..1. .0..1..0..0..0. .0..0..0..0..0
..0..0..0..0..1. .1..1..0..0..0. .0..0..1..0..0. .1..0..0..0..1
..0..1..0..1..0. .1..0..0..0..0. .0..0..1..1..1. .1..0..1..1..0
..1..0..0..0..0. .0..1..0..1..1. .0..1..0..0..0. .0..0..0..0..1
CROSSREFS
Cf. A295943.
Sequence in context: A304466 A228480 A067301 * A352397 A204572 A374915
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2017
STATUS
approved