A079566 Number of unlabeled, connected graphs on n vertices which have no induced subgraph isomorphic to a C4 (cycle on 4 vertices.)
1, 1, 2, 5, 16, 63, 313, 2014, 16724, 178608, 2422046, 41049952, 855470220
Offset: 1
Links
- Z. Blázsik, M. Hujter, M. Pluhár and Z. Tuza, Graphs with no C4 and 2K2, Discrete Math. 115 (1993) 51-55.
- Uli Fahrenberg, Christian Johansen, Georg Struth, Ratan Bahadur Thapa, Generating Posets Beyond N, arXiv:1910.06162 [cs.FL], 2019.
- Uli Fahrenberg, Christian Johansen, Georg Struth, Krzysztof Ziemiański, Posets with Interfaces for Concurrent Kleene Algebra, arxiv:2106.10895 [cs.FL], 2021.
Crossrefs
Cf. A345673.
Extensions
More terms from Falk Hüffner, Jan 11 2016, computed using https://github.com/falk-hueffner/tinygraph (nauty based) version 8489dde
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