A207558 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically

2, 16, 92, 636, 9568, 138017, 3275898, 100565794, 5427850334, 274972547840, 35540211201327, 3458816367555240, 1051654956960360726, 183797069898348851705, 149794018569432287405504

Offset

1,1

Comments

Diagonal of A207564

Links

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

Example

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

Crossrefs

Sequence in context: A220324 A208002 A220932 * A207413 A271273 A220882

Adjacent sequences: A207555 A207556 A207557 * A207559 A207560 A207561

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved