%I #5 Jul 31 2013 17:10:36
%S 1,2,5,12,28,65,152,351,818,1907,4460,10453,24581,57922,136860,324088,
%T 769188,1829282,4359048,10406106,24885240,59607192,142996100,
%U 343540150,826468374,1990841497,4801534221,11593858684,28025623617,67816875039,164268161404
%N Number of rooted identity trees with n nodes and exactly 3 subtrees from the root.
%H Alois P. Heinz, <a href="/A227807/b227807.txt">Table of n, a(n) for n = 7..800</a>
%e : o : o o :
%e : /|\ : /|\ /|\ :
%e : o o o : o o o o o o :
%e : | | : /| | | | :
%e : o o : o o o o o :
%e : | : | | :
%e : o : o o :
%e : : | :
%e : n=7 : n=8 o :
%Y Column k=3 of A227774.
%K nonn
%O 7,2
%A _Alois P. Heinz_, Jul 31 2013