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%I #4 May 10 2013 12:44:50
%S 1,2,2,7,11,25,43,106,180,453,797,2023,3632,9328,16960,44036,80989,
%T 211815,393098,1034958,1934813,5121356,9633260,25615432,48433926,
%U 129289382,245554773,657691061,1253974468,3368475942,6444250241
%N Number of 2-trees rooted at a triangle with two similar edges.
%D F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 76, Eq. (3.5.16).
%Y Cf. A005750, A058870, A058866, A054581.
%K nonn
%O 2,2
%A _Vladeta Jovovic_, Aug 23 2001
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