A207345 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically.

25, 625, 1704, 12292, 71344, 388134, 2367656, 13950908, 79860282, 473919476, 2786796897, 16214534579, 95457905658, 560591392760, 3278996579419, 19256876712615, 113017014575263, 662243340003005, 3886173014048250

Offset: 1

Author

R. H. Hardin Feb 17 2012

Keywords

• nonn

Comments

Column 7 of A207346

Examples

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

Links

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