A207180 Number of nX6 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.

44, 1936, 44065, 981850, 23471595, 567046841, 13575513917, 324280404464, 7753960008192, 185490886984435, 4436906789153102, 106121193817646599, 2538197480774276123, 60709250545517745427, 1452061508622073819918

Offset: 1

Author

R. H. Hardin Feb 15 2012

Keywords

• nonn

Comments

Column 6 of A207182

Examples

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

Links

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