%I #2 Mar 30 2012 17:40:41
%S 1,1,4,268,9456,301306,24846368
%N Number of n X n real symmetric (0,1)-matrices with determinant = 1.
%Y Cf. A086264, A119009.
%K nonn,more
%O 1,3
%A _Giovanni Resta_, May 08 2006
