%I #4 Dec 18 2015 18:17:16
%S 2,0,7,0,870,0,68180,0,18391220,0,10399874310,0,10075020851140,0,
%T 14707103186511120,0
%N Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 6.
%K nonn
%O 4,1
%A _R. H. Hardin_ Feb 09 2009
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