A216463 Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of a 5Xn array with new integer colors introduced in row major order.

5, 15, 322, 4140, 580479, 18171918, 6423148007, 346212390266, 232431640956990, 18633407258171930, 20538497277155387947

Offset: 1

Author

R. H. Hardin Sep 07 2012

Keywords

• nonn

Comments

Row 5 of A216460

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..3....x..2..x..3
..3..x..4..x....0..x..1..x....4..x..1..x....4..x..5..x....1..x..0..x
..x..5..x..3....x..3..x..0....x..0..x..4....x..1..x..4....x..2..x..4
..3..x..6..x....4..x..5..x....2..x..3..x....3..x..5..x....4..x..0..x