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%I #4 Mar 31 2012 12:36:46
%S 141,7669,149149,4188917,119412837,3573771563,108356007319,
%T 3336377520415,103795034576253,3257057281323371
%N Number of zero-sum nX6 -1..1 arrays with every element unequal to at most two horizontal and vertical neighbors
%C Column 6 of A202047
%e Some solutions for n=2
%e .-1..1..1.-1.-1..1...-1.-1..1..1.-1..1....0.-1.-1.-1..1..1....1..1.-1.-1..0..0
%e .-1.-1.-1..1..1..1....0..0..0..0.-1..1....0..0..0..0..1..0....1..1.-1.-1.-1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 10 2011