%I A031148
%S A031148 2,1,2,5,14,43,138,455,1540,5305,18546,65616,234546,845683,
%T A031148 3072350,11235393,41326470,152793376,567518950,2116666670,
%U A031148 7924062430,29765741831,112157686170,423809991041,1605622028100
%N A031148 Number of series-reduced planted trees with n leaves of 2 colors and 
               no symmetries.
%H A031148 N. J. A. Sloane, <a href="transforms.txt">Transforms</a>
%H A031148 <a href="Sindx_Ro.html#rooted">Index entries for sequences related to 
               rooted trees</a>
%F A031148 Doubles (index 2+) under WEIGH transform.
%Y A031148 Essentially the same as A052301. Cf. A000669, A001678, A038075, A050381.
%Y A031148 Sequence in context: A160457 A107087 A115141 this_sequence A032238 A000619 
               A006602
%Y A031148 Adjacent sequences: A031145 A031146 A031147 this_sequence A031149 A031150 
               A031151
%K A031148 nonn,eigen
%O A031148 1,1
%A A031148 Christian G. Bower (bowerc(AT)usa.net)