A207240 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.

18, 324, 1526, 7165, 40838, 197256, 886959, 4132837, 18825154, 83118767, 366894032, 1612009910, 7003691520, 30295384994, 130694823493, 561304207068, 2402966839572, 10265912202332, 43759103277417, 186155560434801

Offset: 1

Author

R. H. Hardin Feb 16 2012

Keywords

• nonn

Comments

Column 6 of A207242

Examples

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

Links

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