A156480 - OEIS

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A156480

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 24.

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

%S 2,22,64,3923,32236,10001476,183254724,94893077616,3439098945960

%N Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 24.

%K nonn

%O 3,1

%A _R. H. Hardin_ Feb 09 2009