A206881 Number of nX6 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically.

37, 1369, 22412, 321393, 5179587, 87541530, 1455584860, 23905464739, 393067971811, 6480684234921, 106874325247350, 1761571690252448, 29031364788581620, 478487481722152310, 7886646984790650669

Offset: 1

Author

R. H. Hardin Feb 13 2012

Keywords

• nonn

Comments

Column 6 of A206883

Examples

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

Links

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