A299445 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 4, 1, 21, 231, 211, 6326, 174794, 665961, 84553473, 4512663317

Offset: 1

Author

R. H. Hardin, Feb 10 2018

Keywords

• nonn

Comments

Diagonal of A299451.

Examples

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

Crossrefs

Cf. A299451.