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A232452 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally 0
1, 51, 8227, 12521603, 176788379233, 21136983701111465, 21913588245620717611365, 197180664173386775421578807871, 15372564935988601841476302687987335803 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A232459

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

..2..2..1....2..0..0....2..2..1....2..2..1....0..1..2....2..0..1....1..1..0

..0..0..0....0..2..1....1..1..1....2..2..2....2..0..0....1..2..1....1..2..0

..1..2..1....0..1..2....2..1..2....1..2..1....1..2..2....1..0..0....2..0..2

CROSSREFS

Sequence in context: A184282 A232278 A208350 * A206395 A160475 A241332

Adjacent sequences:  A232449 A232450 A232451 * A232453 A232454 A232455

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 24 2013

STATUS

approved

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Last modified August 19 01:37 EDT 2017. Contains 290788 sequences.