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%I #3 Mar 31 2012 12:35:23
%S 1,4,4,1,4,6,4,0,4,8,6,4,1,6,6,0,4,10,8,4,6,6,4,0,4,16,12,5,0,12,6,0,
%T 4,8,16,6,8,6,10,0,6,22,6,4,4,12,6,0,1,10,22,11,6,12,14,0,6,8,6,10,0,
%U 12,12,0,4,18,20,4,10,12,6,0,8,10,18,13,4,12,6,0,6,24,10,10,6,12,16,0,4,28,18,6
%N Number of 3X3 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n.
%e All solutions for n=9
%e ...0.0.9...0.9.0...1.4.4...1.4.4...4.1.4...4.4.1...9.0.0...9.0.0
%e ...0.9.0...9.0.0...4.1.4...4.4.1...1.4.4...4.1.4...0.0.9...0.9.0
%e ...9.0.0...0.0.9...4.4.1...4.1.4...4.4.1...1.4.4...0.9.0...0.0.9
%K nonn
%O 0,2
%A _R. H. Hardin_ Feb 09 2009
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