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A007084 Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R2 and R4.
(Formerly M3255)
1
0, 0, 0, 0, 1, 1, 1, 4, 5, 14, 28, 86, 211, 648, 1878, 5931, 18326, 58746, 187620, 608065, 1975191, 6461809, 21212414 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,8
COMMENTS
The graphs R2 and R4 are given on p. 281 of Holton. - Sean A. Irvine, Oct 09 2017
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
D. A. Holton et al., Hamiltonian cycles in cubic 3-connected bipartite planar graphs, J. Combin. Theory, B 38 (1985), 279-297.
CROSSREFS
Cf. A007083.
Sequence in context: A241863 A350527 A316415 * A216243 A093862 A041375
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
Title improved, a(17) corrected and a(20)-a(24) from Sean A. Irvine, Oct 09 2017
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)