A303320 Number of n X n 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 2, 4, 2, 64, 56, 2956, 24759, 3531980, 122180446, 68902353881

Offset: 1

Author

R. H. Hardin, Apr 21 2018

Keywords

• nonn

Comments

Diagonal of A303325.

Examples

			Some solutions for n=5
..0..1..1..1..0. .0..0..0..0..0. .0..1..1..1..0. .0..0..0..0..0
..0..1..1..1..0. .1..0..1..0..1. .0..1..1..1..0. .1..0..1..0..1
..1..1..1..1..1. .0..0..0..0..0. .0..1..0..1..0. .1..0..1..0..1
..0..0..1..0..0. .1..1..1..1..1. .0..1..1..1..0. .1..0..1..0..1
..0..0..1..0..0. .0..1..0..1..0. .1..1..0..1..1. .0..0..0..0..0
		

Crossrefs

Cf. A303325.