A156502 - OEIS

A156502

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 38.

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

%S 2,108,80,22640,182640,60084184,1377842504,1573982139776

%N Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 38.

%K nonn

%O 3,1

%A _R. H. Hardin_ Feb 09 2009