A297714 Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1's.

1, 10, 145, 4212, 512354, 183324631, 154327332017, 362685079640486, 2553300741336194602

Offset: 1

Author

R. H. Hardin, Jan 04 2018

Keywords

• nonn

Comments

Diagonal of A297720.

Examples

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

Crossrefs

Cf. A297720.