A285023 Number of n X n 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

0, 2, 97, 6460, 3708321, 5075612300, 40651048407879, 1063834786036208904, 129443742138071637706453

Offset: 1

Author

R. H. Hardin, Apr 08 2017

Keywords

• nonn

Comments

Diagonal of A285030.

Examples

			Some solutions for n=4
..0..1..0..1. .1..1..0..0. .0..1..0..1. .0..0..0..1. .0..1..1..1
..1..1..1..0. .1..1..0..1. .1..1..0..0. .0..1..0..0. .1..1..0..0
..0..0..0..1. .0..0..0..1. .1..1..0..0. .1..1..1..0. .0..0..1..0
..0..0..1..0. .0..0..1..1. .1..0..1..0. .0..1..0..1. .1..0..0..0
		

Crossrefs

Cf. A285030.