A216341 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 5Xn array with new integer colors introduced in row major order.

5, 27, 877, 15144, 2387180, 87852160, 33093354906, 2004646634218, 1404640885994156, 123560104158582188, 140585911310274456089

Offset: 1

Author

R. H. Hardin Sep 04 2012

Keywords

• nonn

Comments

Row 5 of A216338

Examples

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