A183480 Number of nX6 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.

23, 1647, 12131, 270549, 7773025, 116198719, 2519745049, 56697667073, 1077056431167, 22884814320491, 486391513434439, 9923123962205421, 208990562982405425, 4391311455637955479, 91402396553197281527

Offset: 1

Author

R. H. Hardin Jan 05 2011

Keywords

• nonn

Comments

Column 6 of A183483

Examples

			Some solutions for 4X6
..0..2..2..0..1..1....0..0..0..0..1..1....0..1..1..2..1..2....0..0..0..0..0..1
..0..0..0..0..0..0....0..0..0..0..2..0....0..1..1..0..2..2....0..0..0..0..0..1
..0..0..0..0..1..0....1..2..1..0..1..2....0..2..2..0..0..0....1..0..2..2..0..0
..0..1..1..0..1..0....1..2..1..0..2..2....0..0..0..0..1..1....1..0..2..2..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18