A189643 Number of n X n array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

1, 9, 263, 107080, 250758892, 5760755884032, 958681588788944613, 1369385680210307625221600

Offset: 1

Author

R. H. Hardin Apr 24 2011

Keywords

• nonn

Comments

Diagonal of A189650

Examples

			Some solutions for 3X3
..1..0..2....0..2..1....0..3..2....1..0..2....0..5..4....1..3..2....0..2..1
..3..8..4....3..8..5....1..6..4....4..3..5....3..2..1....7..0..5....3..4..5
..6..5..7....6..7..4....7..5..8....7..6..8....6..7..8....6..8..4....7..6..8