|
%I #12 Mar 29 2013 12:33:00
%S 0,0,1,7,66,1078,33812,2124864,269617328,68809824944,35197776962400,
%T 36032789666289920,73789365506598519808,302234307608870314427904,
%U 2475886847109430725963593728,40564851077856428731075010538496
%N The number of connected components of size > 1 over all simple labeled graphs on n nodes.
%F E.g.f.: (A(x) - x - 1)*B(x) where A(x) is the e.g.f. for A001187 and B(x) is the e.g.f. for A006125.
%t nn=15;g=Sum[2^Binomial[n,2]x^n/n!,{n,0,nn}];Range[0,nn]!CoefficientList[Series[(Log[g]-x)g,{x,0,nn}],x]
%Y Cf. A125207
%K nonn
%O 0,4
%A _Geoffrey Critzer_, Mar 28 2013
|
