%I #8 Mar 14 2013 19:07:51
%S 1,2,243,4951760157141521099596496896
%N Number of spanning trees in directed graph of spanning trees of the complete directed graph on n vertices.
%C Next term (2^80*3^160*5^369) contains over 300 digits.
%D Athanasiadis, Christos A., "Spectra of some interesting combinatorial matrices related to oriented spanning trees on a directed graph", J. Algebraic Combin. 5 (1996), no. 1, 5-11.
%K nonn
%O 0,2
%A _James Propp_, Feb 07 2000