A207917 Number of nX7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

28, 784, 4344, 46800, 366330, 3327954, 28188778, 247024548, 2129817756, 18503218016, 160144863388, 1388528077986, 12029107363320, 104255340840714, 903395668109660, 7828846025215230, 67841580292509632, 587899815684673466

Offset: 1

Author

R. H. Hardin Feb 21 2012

Keywords

• nonn

Comments

Column 7 of A207918

Examples

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

Links

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