%I #2 Mar 30 2012 17:40:41
%S 1,4,22,286,5126,190096,9477868
%N Number of n X n real symmetric (0,1)-matrices with permanent = 1.
%Y Cf. A089482, A119008.
%K nonn,more
%O 1,2
%A _Giovanni Resta_, May 08 2006
