A188952 Number of n X n array permutations with each element moved no more than a city block distance of two.

1, 24, 29172, 504690017, 229188213745576

Offset: 1

Author

R. H. Hardin Apr 14 2011

Keywords

• nonn

Comments

Diagonal of A188958

Examples

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