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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

%I

%S 1,9,256,33057,16796160,34359738368

%N 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

%C Diagonal of A183501

%e Some solutions for 3X3

%e ..0..2..0....0..0..1....0..1..2....0..1..1....0..2..1....1..1..0....1..1..1

%e ..2..0..0....1..0..2....0..1..2....1..2..1....2..0..0....2..2..1....2..0..2

%e ..0..0..2....2..2..2....0..2..0....0..1..0....0..0..1....0..2..1....2..2..2

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 05 2011

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Last modified May 20 12:33 EDT 2019. Contains 323422 sequences. (Running on oeis4.)