A215922 Number of diagonal and antidiagonal neighbor colorings of the odd squares of an nX5 array with new integer colors introduced in row major order.

2, 15, 136, 12840, 322768, 87852626, 4044766240, 2227156082842, 157752739276184, 148049849095504726, 14670983946354664200, 21183598567292002167082, 2765649842153732133940784, 5737167377815628378510929822

Offset: 1

Author

R. H. Hardin Aug 27 2012

Keywords

• nonn

Comments

Column 5 of A215924

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..25