A232058 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal

1, 6, 46, 534, 13538, 612364, 59448262, 10508498862, 4011743077182, 2813378775175894, 4273709472166465256, 11960135034686739832398

Offset

1,2

Comments

Diagonal of A232065

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=5
..2..0..1..2..1....2..1..0..2..1....1..2..1..0..2....2..1..0..2..0
..0..1..2..1..0....1..2..1..0..2....0..1..0..1..0....1..0..2..0..1
..1..2..1..0..1....0..1..2..1..0....1..2..1..2..1....0..2..0..1..2
..2..1..0..1..2....1..2..1..2..1....0..1..0..1..0....2..0..1..2..1
..1..0..1..2..1....2..1..0..1..2....1..2..1..2..1....1..2..0..1..2

Crossrefs

Sequence in context: A006386 A326324 A215084 * A331704 A275031 A094655

Adjacent sequences: A232055 A232056 A232057 * A232059 A232060 A232061

Keyword

nonn

Author

R. H. Hardin, Nov 17 2013

Status

approved