A207470 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

26, 676, 3910, 23645, 119965, 491948, 2090927, 7990970, 29983194, 111123886, 398530787, 1431372629, 5073097036, 17882557521, 62951565198, 220461353120, 771854520770, 2697705853283, 9418337941471, 32876550226248, 114672698592869

Offset: 1

Author

R. H. Hardin Feb 18 2012

Keywords

• nonn

Comments

Row 6 of A207467

Examples

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

Links

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