A208027 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.

42, 1764, 14946, 118179, 917293, 7184755, 56728924, 445530887, 3494319540, 27469986456, 215862782229, 1695298344579, 13318507574891, 104639074476398, 822013471428905, 6457620629731560, 50731795567376622, 398547965742628997

Offset: 1

Author

R. H. Hardin Feb 22 2012

Keywords

• nonn

Comments

Column 7 of A208028

Examples

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

Links

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