A207418 Number of nX7 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.

31, 961, 4719, 24317, 175903, 891720, 4094666, 21072638, 99746042, 440141222, 2003254604, 8937597494, 38381074339, 165425593855, 709144263593, 2981321572403, 12486729646315, 52162085656079, 215733902493821

Offset: 1

Author

R. H. Hardin Feb 17 2012

Keywords

• nonn

Comments

Column 7 of A207419

Examples

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

Links

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