%I #4 May 10 2013 12:45:31
%S 3,12,7,44,80,0,12,111,440,840,630,0,18,234,1532,6048,13692,13440,0,0,
%T 25,441,4270,26740,106792,248696,277200,75600,0,0,33,768,10360,92940,
%U 557322,2169416,5158512,6617520,3326400,0,0,0
%N Triangle read by rows: T(n,m) = number of T_0-multigraphs with n edges and m vertices(n>=2, 3<=m<=2*n).
%F E.g.f.: (1+x)*exp(-x-x^2/2*y/(1-y))*Sum((1-y)^(-binomial(n, 2))*x^n/n!, n=0..infinity).
%e 3,12; 7,44,80,0; 12,111,440,840,630,0; 18,234,1532,6048,13692,13440,0,0; 25,441,4270,26740,106792,248696,277200,75600,0,0;
%e 33,768,10360,92940,557322,2169416,5158512,6617520,3326400,0,0,0; ...
%K nonn,tabf
%O 2,1
%A Goran Kilibarda, _Vladeta Jovovic_, May 21 2004
|