A299648 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

1, 8, 247, 29408, 13431706, 23582064542, 159047224409362, 4121184916626976747, 410254820466598294243538, 156900221075811012583120150328, 230531929217067955283511588326278811

Offset: 1

Author

R. H. Hardin, Feb 15 2018

Keywords

• nonn

Comments

Diagonal of A299654.

Examples

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

Crossrefs

Cf. A299654.