A208102 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically

2, 16, 78, 361, 6235, 261121, 4747545, 90782784, 18473477832, 9693564675601, 668167531935849, 46925086118316121, 128627682135940435023, 919037094400530117376144, 213624920267877921384329046

Offset

1,1

Comments

Diagonal of A208108

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for n=5
..0..1..1..0..0....1..0..0..1..1....1..0..1..1..1....1..1..1..1..1
..0..1..1..0..1....0..1..1..0..0....0..0..1..1..1....0..0..1..1..1
..0..1..1..1..0....1..0..0..1..1....1..0..1..1..1....1..0..1..1..1
..1..1..1..0..1....0..1..1..0..0....0..0..1..1..1....0..1..1..1..1
..0..1..1..1..0....1..0..0..1..1....0..0..1..1..1....0..0..1..1..1

Crossrefs

Sequence in context: A356372 A028336 A244717 * A207723 A208835 A208683

Adjacent sequences: A208099 A208100 A208101 * A208103 A208104 A208105

Keyword

nonn

Author

R. H. Hardin Feb 23 2012

Status

approved