A207447 Number of 7Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.

35, 1225, 14743, 165626, 2078416, 24609889, 284247216, 3316383098, 38630942068, 448234580146, 5204017590681, 60440346257235, 701591767463860, 8143643192312255, 94537663920104487, 1097406693263337001

Offset: 1

Author

R. H. Hardin Feb 17 2012

Keywords

• nonn

Comments

Row 7 of A207442

Examples

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

Links

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