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A058378
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Number of trivalent 2-connected planar graphs with 2n nodes.
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2
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0, 1, 1, 3, 8, 29, 114, 583, 3310, 21168, 144622, 1039495, 7731540
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| A. T. Balaban, Enumeration of Cyclic Graphs, pp. 63-105 of A. T. Balaban, ed., Chemical Applications of Graph Theory, Ac. Press, 1976; see p. 92.
Computed by Brendan McKay (bdm(AT)cs.anu.edu.au) and Gunnar Brinkmann (Gunnar.Brinkmann(AT)ugent.be) using their program "plantri", Dec 19, 2000
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LINKS
| B. D. McKay, Plantri
M. Meringer, Tables of Regular Graphs
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CROSSREFS
| Cf. A005964, A000109.
Sequence in context: A148875 A148876 A013309 * A063839 A192744 A130470
Adjacent sequences: A058375 A058376 A058377 * A058379 A058380 A058381
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KEYWORD
| nonn,nice,hard
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2000
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