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

1,2

Comments

Diagonal of A266101.

Links

Table of n, a(n) for n=1..12.

Example

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.

Sequence in context: A178295 A054937 A302993 * A255523 A193222 A274265

Adjacent sequences: A266092 A266093 A266094 * A266096 A266097 A266098

Keyword

nonn

Author

R. H. Hardin, Dec 21 2015

Status

approved