

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
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OFFSET

1,2


COMMENTS



LINKS



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



KEYWORD

nonn


AUTHOR



STATUS

approved



