A156485 - OEIS

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A156485

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 26.

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

%S 2,0,96,88,9866,64560,10075588,176105168,80948165500,4500246590912

%N Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 26.

%K nonn

%O 2,1

%A _R. H. Hardin_ Feb 09 2009