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A183475 Number of n X n 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors 0
1, 15, 117, 4015, 706473, 116198719, 84056287173 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183483

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for 4X4

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

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

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

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

CROSSREFS

Sequence in context: A126510 A328725 A331211 * A253804 A161476 A162321

Adjacent sequences:  A183472 A183473 A183474 * A183476 A183477 A183478

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified October 19 09:22 EDT 2021. Contains 348074 sequences. (Running on oeis4.)