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A282392
Number of n X n 0..1 arrays with no 1 equal to more than three of its king-move neighbors.
0
2, 16, 324, 23773, 5297294, 3599858930, 7910979963313, 53854022070851701, 1148683749680759012469, 77042220735586114776631734, 16170289409470789812334507667662
OFFSET
1,1
COMMENTS
Diagonal of A282399.
EXAMPLE
Some solutions for n=4
..0..0..1..1. .0..1..1..1. .1..0..0..0. .0..0..0..0. .0..0..1..0
..1..1..0..0. .1..0..0..0. .1..1..0..0. .1..1..1..0. .1..0..0..0
..0..0..0..0. .0..0..0..1. .0..0..1..1. .1..0..0..1. .1..0..0..0
..0..1..0..1. .1..1..0..1. .1..1..0..0. .0..0..0..0. .1..1..1..1
CROSSREFS
Cf. A282399.
Sequence in context: A137729 A278589 A171212 * A336522 A294039 A009100
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 14 2017
STATUS
approved