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

%S 1,2,4,51,275,16008,175374,67060718,1866384501,2036398653264

%N Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 36.

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 09 2009