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Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 37.
0

%I #4 Dec 18 2015 18:17:17

%S 2,0,50,18,13276,76680,40760544,1759663680,1948154942040

%N Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 37.

%K nonn

%O 2,1

%A _R. H. Hardin_ Feb 09 2009