A201494 - OEIS

%I #4 Mar 31 2012 12:36:44

%S 18,36487,168357815,732383803600,2571822263246639,7383126698273869479

%N Number of nX6 zero-sum -2..2 arrays with rows and columns lexicographically nondecreasing

%C Column 6 of A201496

%e Some solutions for n=2

%e .-2.-1.-1..0..0..2...-2.-1.-1..1..1..1...-2.-1.-1..0..1..1...-2..0..0..0..1..2

%e .-1.-1.-1..2..2..1....1..0..0.-2..1..1....2.-2..2..2.-2..0...-2..0..2..2.-1.-2

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 02 2011