A266095 Number of n X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.

1, 5, 64, 929, 53442, 12401485, 6206090116, 5955851105844, 17910530164706984, 181493083347714402782, 4372527304675102033719740, 234910588564744761536499928490

Offset: 1

Author

R. H. Hardin, Dec 21 2015

Keywords

• nonn

Comments

Diagonal of A266101.

Examples

			Some solutions for n=4
..0..0..2..1....1..0..1..1....0..1..2..0....0..0..2..1....0..2..1..2
..1..1..0..1....1..2..0..1....2..1..0..0....1..1..0..1....1..0..1..1
..2..1..2..0....0..2..1..1....1..0..2..1....1..0..1..1....1..2..0..0
..1..0..0..1....1..0..0..1....1..1..0..0....1..2..0..0....0..0..0..1
		

Crossrefs

Cf. A266101.