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%I #5 Dec 18 2015 18:18:49
%S 2,8,48,468,7502,197418,8526852,605163204,70386525080,13408775102044,
%T 4179101921059146,2129605103994689632
%N Number of n X n 0..2 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it, modulo 3
%C Diagonal of A238812
%e Some solutions for n=5
%e ..2..2..0..0..0....0..2..2..0..0....0..0..0..2..2....2..2..0..0..0
%e ..2..2..0..0..0....2..2..1..2..0....2..2..0..1..2....2..1..0..2..2
%e ..0..0..0..2..2....2..1..2..2..0....2..1..0..0..0....0..2..2..1..2
%e ..0..0..0..2..2....0..2..2..0..0....0..0..0..2..1....0..2..1..0..0
%e ..0..0..2..1..0....0..0..0..0..2....0..0..0..2..1....0..0..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 05 2014
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