A230175 Number of nX7 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

63, 530771, 704822331, 1027868078181, 1514677019365483, 2222884630214739547, 3274958849115023706081, 4822680345112751878337083, 7098618594645882579322969411, 10449577732703043756255819628725

Offset: 1

Author

R. H. Hardin, Oct 11 2013

Keywords

• nonn

Comments

Column 7 of A230176

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..28