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A291172 Number of maximal chord diagrams of genus g counted up to rotations. 3
1, 4, 131, 14118, 2976853, 1013582110, 508233789579, 352755124921122, 324039613564554401, 380751174738424280720, 557175918657122229139987, 993806827312044893602464496 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Also: the number of non-isomorphic one-face one-vertex maps on a genus g surface under orientation-preserving isomorphisms.
LINKS
Robert Cori, Michel Marcus, Counting non-isomorphic chord diagrams, Theoretical Computer Science, Volume 204, Issue 1, 1998, Pages 55-73.
Evgeniy Krasko, Counting Unlabelled Chord Diagrams of Maximal Genus, arXiv:1709.00796 [math.CO], 2017.
CROSSREFS
Sequence in context: A003371 A113253 A201977 * A194536 A064227 A353794
KEYWORD
nonn
AUTHOR
Evgeniy Krasko, Sep 03 2017
STATUS
approved

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Last modified March 28 14:21 EDT 2024. Contains 371254 sequences. (Running on oeis4.)