A207424 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.

25, 625, 5625, 47089, 444889, 3892729, 32936121, 283215241, 2427040225, 20642505625, 175841842225, 1499143116025, 12764120981481, 108666218127481, 925439613839521, 7880177347151769, 67093251777369801, 571284105880558225

Offset: 1

Author

R. H. Hardin Feb 17 2012

Keywords

• nonn

Comments

Column 6 of A207426

Examples

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

Links

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