[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A243551
Number of simple connected graphs with n nodes that have no subgraph isomorphic to the bowtie graph or K_4.
0
1, 1, 2, 5, 14, 56, 256, 1656, 13952, 163878, 2646642, 59088801
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
K_4 is the complete graph on four vertices.
LINKS
Table of n, a(n) for n=1..12.
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, 2014
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 29e68fa.
CROSSREFS
Cf. A242792 (bowtie free graphs), A079574 (K_4 free graphs).
Sequence in context: A047136 A047042 A174795 * A110043 A006847 A008286
Adjacent sequences: A243548 A243549 A243550 * A243552 A243553 A243554
KEYWORD
nonn,more
AUTHOR
Travis Hoppe and Anna Petrone, Jun 06 2014
EXTENSIONS
a(11)-a(12) added using tinygraph by Falk Hüffner, Sep 23 2020
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 7 00:48 EST 2024. Contains 377523 sequences.
License Agreements, Terms of Use, Privacy Policy