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

1,1

Comments

Diagonal of A208164

Links

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

Example

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

Crossrefs

Sequence in context: A207746 A207248 A208033 * A208282 A207236 A207955

Adjacent sequences: A208156 A208157 A208158 * A208160 A208161 A208162

Keyword

nonn

Author

R. H. Hardin Feb 24 2012

Status

approved