%I #5 Nov 04 2017 17:45:50
%S 1,4,47,4043,4553432
%N Number of graphs with 2n vertices that have an odd determinant for their adjacency matrix.
%Y Cf. A000088, A140981.
%K hard,more,nonn
%O 1,2
%A _Tanya Khovanova_, Aug 18 2008
%E a(4)-a(5) from _Andrew Howroyd_, Nov 04 2017