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%I #4 Mar 31 2012 12:36:45
%S 85,3617,48335,988589,20960485,472565771,10857153407,253641348337,
%T 5979418257253,142075597768273,3395164032578079,81529069984570623,
%U 1965470518289395959
%N Number of zero-sum nX4 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors
%C Column 4 of A201803
%e Some solutions for n=3
%e ..0.-1..1..0...-2..1..1..0...-2.-2.-1.-1...-1..1.-2..1...-1..2.-2.-2
%e ..0.-1..1..1...-2..1..1..1....2..2..0..0....1..1.-2..1....2..2..0..0
%e ..0.-1..1.-1...-2..1..0..0...-1..2..0..1....0..0.-2..2...-2..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 05 2011
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