%I #5 Mar 30 2012 16:48:55
%S 0,0,1,8,78,944,13760,235248,4620224,102551296,2539240416,69398978560,
%T 2075328010624,67408188246528,2363279141726464,88952164594807808,
%U 3577709564478865920,153136329382704201728,6950244396227548178432
%N Total number of interior nodes in all series-parallel networks with n labeled edges, multiple edges allowed.
%D J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226.
%H <a href="/index/Mo#Moon87">Index entries for sequences mentioned in Moon (1987)</a>
%Y A058480 = A058478 + A058479.
%K nonn
%O 0,4
%A _N. J. A. Sloane_, Dec 20 2000