A208368 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically.

42, 1764, 23010, 275769, 3759574, 47178453, 570085195, 6982331490, 85099853444, 1028266559100, 12425457898119, 150136148402568, 1811048511383583, 21834166758810375, 263223641419702766, 3172338713859879000

Offset: 1

Author

R. H. Hardin Feb 25 2012

Keywords

• nonn

Comments

Column 7 of A208369

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210