A183481 Number of nX7 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors.

37, 5751, 58333, 1942323, 107741253, 2519745049, 84056287173

Offset: 1

Author

R. H. Hardin Jan 05 2011

Keywords

• nonn

Comments

Column 7 of A183483

Examples

			Some solutions for 4X7
..0..0..0..1..1..0..2....0..0..0..0..2..1..0....0..0..1..0..2..2..0
..0..0..0..1..0..0..2....0..0..0..0..2..1..0....0..0..1..0..0..0..0
..0..1..0..0..2..0..0....0..0..0..0..0..0..0....0..0..0..0..1..0..0
..0..1..0..2..2..0..0....0..0..0..0..0..2..2....0..1..1..0..1..0..0