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

%S 3,22,474,21676,6117690,8086830378,27448134968478,351300513333271976

%N Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 50.

%K nonn

%O 2,1

%A _R. H. Hardin_ Feb 09 2009