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%I #5 Oct 27 2019 18:14:50
%S 1,1680,0,0,320743643010,10058239033920,0,0,16657062087640520,
%T 62993444371397120,0,0
%N Number of 17 X 17 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.
%K nonn
%O 0,2
%A _R. H. Hardin_, Feb 09 2009