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A126201
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Number of rooted connected unlabeled planar graphs on n nodes.
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4
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OFFSET
| 1,3
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COMMENTS
| Number of "pointed" connected planar graphs on n nodes: number of pairs (G,P) where G is a connected unlabeled planar graph with n nodes and P runs through the orbit representatives of nodes in G under the action of Aut(G).
For n <= 4 this agrees with A126100; a(5) = A126100(5) - 1 = 57, since K_5 is the only excluded graph on 5 nodes.
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CROSSREFS
| Cf. A005470, A039735, A126100.
Sequence in context: A180112 A188458 A001586 * A020012 A126100 A009444
Adjacent sequences: A126198 A126199 A126200 * A126202 A126203 A126204
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KEYWORD
| nonn
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AUTHOR
| David Applegate (david(AT)research.att.com) and N. J. A. Sloane (njas(AT)research.att.com), Mar 09 2007
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EXTENSIONS
| a(6)-a(10) from Brendan McKay, Mar 10 2007
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