A208159 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically.

2, 16, 102, 981, 14446, 297702, 9072707, 424153857, 29316311612, 3025550427476, 473181884230845, 111694857841157921, 39694965205591894619, 21331992417577197285058, 17352141355803100139646251

Offset: 1

Author

R. H. Hardin Feb 24 2012

Keywords

• nonn

Comments

Diagonal of A208164

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..16