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, 102, 3384, 4190874, 3177012844, 45913351929099, 746140228341333064, 140666601117969492988244

Offset: 1

Author

R. H. Hardin, Mar 27 2017

Keywords

• nonn

Comments

Diagonal of A284455.

Examples

			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.