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%I #4 Mar 31 2012 12:36:46
%S 4,555,207562,108479344,54711391946,23770010642604,8770728360813539,
%T 2783263135495226169,772297911415160439452,190197136552795434910476
%N Number of nX7 zero-sum -1..1 arrays with rows and columns lexicographically nondecreasing
%C Column 7 of A202033
%e Some solutions for n=2
%e .-1.-1.-1.-1..0..0..1...-1.-1.-1..0..1..1..1...-1..0..0..0..0..0..1
%e ..0..1..1..1.-1..0..1....0..0..1.-1..0..0..0....0.-1..0..0..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 09 2011
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