A207746 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically

2, 16, 102, 900, 8778, 104976, 1341606, 20115225, 316615970, 5707953601, 106646250804, 2244863934369, 48526426817904, 1167193108267264, 28644642089792472, 774480816028370889, 21267135535735987266

Offset

1,1

Comments

Diagonal of A207752

Links

R. H. Hardin, Table of n, a(n) for n = 1..61

Example

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

Crossrefs

Sequence in context: A207699 A207902 A267713 * A207248 A208033 A208159

Adjacent sequences: A207743 A207744 A207745 * A207747 A207748 A207749

Keyword

nonn

Author

R. H. Hardin Feb 19 2012

Status

approved