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A243337 Number of simple connected graphs with n nodes that are planar and K_4 free. 0
1, 1, 2, 5, 17, 79, 478, 4123, 46666, 648758, 10275896, 177007433 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
K_4 is the complete graph on four vertices.
LINKS
Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 9766535.
CROSSREFS
Cf. A003094 (planar graphs), A079574 (K_4 free graphs).
Sequence in context: A361243 A302194 A289739 * A259622 A054499 A001186
KEYWORD
nonn,more
AUTHOR
Travis Hoppe and Anna Petrone, Jun 03 2014
EXTENSIONS
a(11)-a(12) added using tinygraph by Falk Hüffner, May 10 2019
STATUS
approved

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Last modified April 21 19:19 EDT 2024. Contains 371882 sequences. (Running on oeis4.)