A282878 Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

0, 2, 74, 3762, 480995, 128768496, 79687436788, 115172557654616, 393143666098549156, 3196549492640753656296, 62216948503916625663186184

Offset: 1

Author

R. H. Hardin, Feb 24 2017

Keywords

• nonn

Comments

Diagonal of A282885.

Examples

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

Crossrefs

Cf. A282885.