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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 1
14, 1155, 623933, 1719525751, 24021101375251, 1738678950539792051 (list; graph; refs; listen; history; text; internal format)
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

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Last modified October 2 23:51 EDT 2022. Contains 357230 sequences. (Running on oeis4.)