A230674 Number of nX7 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

63, 141411, 108108231, 91258562955, 77282148036051, 65376252475286079, 55314799986833459367, 46801278897512391365487, 39598077165834016051238043, 33503529630527901643288424553, 28346994197765512368139659784815

Offset: 1

Author

R. H. Hardin, Oct 27 2013

Keywords

• nonn

Comments

Column 7 of A230675

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..39