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A183493 Half the number of n X n 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors 0
1, 9, 256, 33057, 16796160, 34359738368 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183501

LINKS

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

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A296950 A025133 A193129 * A183424 A160073 A157575

Adjacent sequences:  A183490 A183491 A183492 * A183494 A183495 A183496

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified April 20 17:54 EDT 2019. Contains 322310 sequences. (Running on oeis4.)