%I A038078
%S A038078 1,2,1,2,6,20,69,270,1026,4120,16794,70230,298306,1288912,5642559,
%T A038078 25007756,111998920,506348902,2308338456,10602357346,49026021552,
%U A038078 228085486580,1067020210339,5016982766202,23698640081356
%N A038078 Number of identity trees with 2-colored nodes.
%H A038078 <a href="Sindx_Tra.html#trees">Index entries for sequences related to 
               trees</a>
%F A038078 G.f.: B(x)-B^2(x)/2-B(x^2)/2, where B(x) is g.f. for A038077.
%Y A038078 Cf. A000220. A038077-A038080.
%Y A038078 Sequence in context: A131804 A032085 A032163 this_sequence A000139 A114572 
               A052621
%Y A038078 Adjacent sequences: A038075 A038076 A038077 this_sequence A038079 A038080 
               A038081
%K A038078 nonn
%O A038078 0,2
%A A038078 Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.