A216077 Number of horizontal 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, 5, 602, 373780, 33093252880, 14216413305846436, 2562708724272040433794232, 2209363619821632289359062591728192

Offset: 1

Author

R. H. Hardin Sep 01 2012

Keywords

• nonn

Comments

Diagonal of A216084

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....2..x..3..x....2..x..0..x....2..x..3..x
..x..4..x..3....x..2..x..4....x..2..x..3....x..3..x..4....x..1..x..3
..3..x..4..x....0..x..2..x....0..x..2..x....5..x..3..x....3..x..4..x