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%I #5 Dec 18 2015 18:18:49
%S 1,3,7,59,354,7265,107611,5388959,194626082,23726658020,2082243229557,
%T 617263247981529,131451761499759800,94681989011284774859,
%U 48894324154695455938601
%N Number of n X n 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3
%C Diagonal of A239030
%e Some solutions for n=5
%e ..2..0..0..0..0....2..0..0..0..0....2..0..0..0..0....2..0..0..0..0
%e ..2..0..0..0..0....1..0..0..2..2....2..0..0..0..0....1..2..2..0..0
%e ..1..2..2..0..0....2..0..0..1..2....1..0..0..0..2....2..1..2..0..0
%e ..2..1..1..0..0....2..0..0..0..0....1..0..0..2..2....2..0..0..0..0
%e ..1..0..0..0..0....1..0..0..2..1....2..0..0..1..1....1..2..1..0..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 09 2014
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