A215903 Number of diagonal and antidiagonal neighbor colorings of the even squares of an n X 7 array with new integer colors introduced in row major order.

15, 203, 84550, 14050312, 37060769357, 18383354944364, 148049909203591059, 152834703746357948488, 2765650341438362598776986, 4971673449387903153569761420, 170381714096217475684749198312607

Offset: 1

Author

R. H. Hardin, Aug 26 2012

Keywords

• nonn

Comments

Column 7 of A215904.

Examples

			Some solutions for n=3
..0..x..1..x..2..x..3....0..x..1..x..2..x..3....0..x..0..x..1..x..2
..x..4..x..4..x..5..x....x..4..x..5..x..4..x....x..3..x..4..x..5..x
..6..x..6..x..0..x..1....0..x..0..x..0..x..3....6..x..1..x..0..x..2
		

Crossrefs

Cf. A215904.