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%I #2 Mar 31 2012 14:40:18
%S 0,1,1,3,4,10,17,39,77,176,381,891,2057,4941,11915,29391,73058,184236,
%T 468330,1202349,3108760,8097518,21218776,55925742,148146312,394300662,
%U 1053929982,2828250002,7617271738,20584886435,55802753243
%N A005195(n) - A005195(n-1).
%C a(n) is the number of forests with n unlabeled nodes without isolated vertices. This follows from the fact that for n>0 A005195(n-1) counts the forests with one or more isolated nodes.
%Y Cf. A005195, A144959.
%K nonn
%O 1,4
%A _Washington Bomfim_, Sep 27 2008
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