A207398 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically

2, 16, 102, 729, 4212, 26896, 154580, 970225, 5697150, 36000000, 216023850, 1377968641, 8411571224, 54080432704, 334469528520, 2163643890489, 13517662791690, 87865126849600, 553380551724110, 3610810383420361

Offset

1,1

Comments

Diagonal of A207403

Links

R. H. Hardin, Table of n, a(n) for n = 1..27

Example

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

Crossrefs

Sequence in context: A197800 A209645 A207062 * A207699 A207902 A267713

Adjacent sequences: A207395 A207396 A207397 * A207399 A207400 A207401

Keyword

nonn

Author

R. H. Hardin Feb 17 2012

Status

approved