A207549 Number of nX7 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.

1791, 3207681, 3434478282, 3444706587880, 3281119335987704, 3082694275519480041, 2876868686935789680075, 2678620674955838194068380, 2491610702126355619980595983, 2316819788394652271932508770307

Offset: 1

Author

R. H. Hardin Feb 18 2012

Keywords

• nonn

Comments

Column 7 of A207550

Examples

			Some solutions for n=4
..1..1..0..2..2..0..2....1..1..0..2..1..1..2....2..1..1..0..0..0..1
..0..1..1..1..2..0..1....1..1..0..1..0..0..1....1..2..0..0..2..1..2
..0..1..0..1..1..2..2....0..1..0..0..0..2..2....0..2..1..2..0..0..0
..2..2..0..1..0..1..0....1..1..1..2..2..2..0....2..1..1..0..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..124