A229846 Number of nX7 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).

63, 63291, 31783299, 17324310663, 9366963651897, 5071373978989773, 2745117942652795617, 1485981308554100717397, 804382842721296064467525, 435424391066549741979527775, 235701650566916249474911785897

Offset: 1

Author

R. H. Hardin, Oct 01 2013

Keywords

• nonn

Comments

Column 7 of A229847

Examples

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

Links

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