A206613 Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..2 introduced in row major order

14, 1155, 623933, 1719525751, 24021101375251, 1738678950539792051

Offset

1,1

Comments

Diagonal of A206621

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=4
..0..0..1..2..2....0..0..0..0..1....0..0..0..1..2....0..0..1..2..2
..2..1..2..1..1....1..2..1..2..0....1..0..2..0..2....2..1..0..0..1
..1..2..1..1..2....1..0..2..1..0....0..1..0..0..1....2..0..1..1..0
..1..1..0..2..1....1..2..0..0..2....2..0..2..2..0....0..2..2..0..1
..2..0..1..2..1....0..0..1..0..1....1..2..1..2..1....0..1..0..2..1

Crossrefs

Sequence in context: A178989 A232373 A323181 * A198712 A204972 A209677

Adjacent sequences: A206610 A206611 A206612 * A206614 A206615 A206616

Keyword

nonn

Author

R. H. Hardin Feb 10 2012

Status

approved