A216608 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an n X n array with new integer colors introduced in row major order.

1, 1, 2, 203, 83437, 6423127757, 2043835395791757, 324446722340564335642246

Offset: 1

Author

R. H. Hardin Sep 10 2012

Keywords

• nonn

Comments

Diagonal of A216612

Examples

			Some solutions for n=4
..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1
..2..x..3..x....2..x..3..x....1..x..2..x....1..x..2..x....2..x..3..x
..x..4..x..1....x..4..x..1....x..3..x..4....x..0..x..3....x..4..x..1
..5..x..0..x....1..x..5..x....2..x..5..x....3..x..2..x....1..x..3..x