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%I A156471 #4 Dec 18 2015 18:17:17
%S A156471 2,28,76,6024,39000,4562152,61580624,13526490400,338077231956,
%T A156471 183471645987760
%N A156471 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 19.
%K A156471 nonn
%O A156471 3,1
%A A156471 _R. H. Hardin_ Feb 09 2009

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