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A232302 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically or antidiagonally 0
1, 37, 5149, 6363511, 66287652717, 5637591065064585, 3953611274692252664219, 22845060732287997693078487339, 1087328305739985850553848837289874701, 426327214385010895269748977017138080515645751 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A232309

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A305142 A125599 A219409 * A153166 A153168 A195215

Adjacent sequences:  A232299 A232300 A232301 * A232303 A232304 A232305

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 22 2013

STATUS

approved

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Last modified December 9 08:41 EST 2021. Contains 349627 sequences. (Running on oeis4.)