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A111563
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Number of connected outerplanar graphs on n unlabeled nodes.
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1
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1, 1, 2, 5, 13, 46, 172, 777, 3783, 20074, 111604, 646409, 3846640, 23410035, 144965988, 910898943, 5794179218, 37248630398, 241676806702, 1580880366039, 10416314047854, 69080674190341, 460841447382976, 3090747326749823
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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LINKS
| S. Vigerske, Asymptotic enumeration of unlabeled outerplanar graphs, Diploma thesis, Humboldt University Berlin, 2005
Manuel Bodirsky, Eric Fusy, Mihyun Kang and Stefan Vigerske, Enumeration of Unlabeled Outerplanar Graphs, 2005
Stefan Vigerske, Homepage
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FORMULA
| Generating function und cycle index sum known, see Vigerske or Bodirsky, Fusy, Kang and Vigerske.
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CROSSREFS
| Cf. A001004, A097998, A098000.
Sequence in context: A000719 A149875 A085632 * A079573 A194635 A067021
Adjacent sequences: A111560 A111561 A111562 * A111564 A111565 A111566
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KEYWORD
| nonn
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AUTHOR
| Stefan Vigerske Nov 17 2005
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