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A292111 Reflective-symmetric maximal chord diagrams by genus, type II. 0
1, 3, 25, 287, 4581, 90519, 2162901, 60249195, 1921751145, 68980179915, 2753007869745, 120897239789655 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..12.

Evgeniy Krasko, Counting Unlabelled Chord Diagrams of Maximal Genus, arXiv:1709.00796 [math.CO], 2017. See Table 1, column 3.

CROSSREFS

The other three sequences in Table 1 are A291172, A275787, A291371.

Sequence in context: A126746 A118989 A229162 * A123989 A001907 A212722

Adjacent sequences:  A292108 A292109 A292110 * A292112 A292113 A292114

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Sep 20 2017

EXTENSIONS

Name clarified by Evgeniy Krasko, Sep 30 2017

STATUS

approved

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Last modified April 10 20:32 EDT 2021. Contains 342856 sequences. (Running on oeis4.)