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A284448
Number of n X n 0..1 arrays with the number of 1's king-move adjacent to some 0 one less than the number of 0's adjacent to some 1.
0
0, 0, 102, 3384, 4190874, 3177012844, 45913351929099, 746140228341333064, 140666601117969492988244
OFFSET
1,3
COMMENTS
Diagonal of A284455.
EXAMPLE
Some solutions for n=4
..1..1..0..0. .1..1..0..0. .0..1..0..0. .0..0..1..0. .0..0..0..0
..0..0..0..1. .1..1..1..0. .0..1..1..1. .0..1..0..0. .0..1..1..0
..1..1..0..0. .1..0..0..0. .0..0..1..0. .1..1..0..1. .1..1..0..0
..1..1..0..1. .0..1..0..1. .0..0..1..1. .1..1..0..1. .1..1..1..1
CROSSREFS
Cf. A284455.
Sequence in context: A230737 A203401 A217331 * A274252 A303993 A030512
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 27 2017
STATUS
approved