A207588 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

42, 1764, 1728, 8244, 30056, 85536, 263550, 876860, 2830656, 8637716, 26358144, 82906122, 259356680, 797032056, 2446151996, 7564283208, 23414818812, 72062481458, 221435203512, 682319992200, 2103278142776, 6472523087596

Offset: 1

Author

R. H. Hardin Feb 19 2012

Keywords

• nonn

Comments

Column 7 of A207589

Examples

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

Links

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