Extend Sequence A005966 - trivalent planar multigraphs with 2n nodes
Paul D. Hanna
pauldhanna at juno.com
Mon Dec 13 07:34:47 CET 2004
Would someone be able to supply more terms of this sequence?
URL: http://www.research.att.com/projects/OEIS?Anum=A005966
Sequence: 1,2,5,17,71,357
Name: Number of trivalent planar multigraphs with 2n nodes.
References A. T. Balaban, ed., Chemical Applications of Graph Theory, Ac.
Press,
1976, p. 92.
Keywords: nonn,more
I have encountered a sequence that begins with these terms
and I would like to know if they are the same (though unlikely).
If so, the next few terms would be:
2101,14203,108609,927961,8769087,90874197,1025292311,...
Is there a g.f. for such sequences?
Thanks,
Paul
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