%I A094656
%S A094656 1,1,1,7,55,840,15189,309607,6671842,149850849,3471296793,82442359291,
%T A094656 1998559329142,49290785442796,1233639304644946,31268489727956101,
%U A094656 801335133177932829,20736286803363051714,541224489038545084067
%N A094656 Number of unlabeled 12-gonal 2-trees with n 12-gons.
%H A094656 G. Labelle, C. Lamathe and P. Leroux, <a href="http://arXiv.org/abs/math.CO/
               0312424">Labeled and unlabeled enumeration of k-gonal 2-trees</a>
%Y A094656 Cf. A054581.
%Y A094656 Sequence in context: A159313 A054910 A028562 this_sequence A117993 A055056 
               A009521
%Y A094656 Adjacent sequences: A094653 A094654 A094655 this_sequence A094657 A094658 
               A094659
%K A094656 nonn
%O A094656 0,4
%A A094656 Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 06 2004