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A348796 Numbers of 3-regular one-face rooted maps on non-orientable surfaces. 4
6, 128, 3780, 163840, 8828820, 587202560, 45821335560, 4133906022400, 421946699674500, 48151737348915200, 6070544859205827000, 838225443769915801600, 125787689149526729325000, 20385642792484352294912000, 3548258423062128985899690000, 660168656191813264718430208000, 130746565669943973430227429382500, 27463016097579431812286696652800000, 6098023559259606741021710317037175000 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

In the paper p. 18, Table 3, this sequence is designated "tau^(3)_(-)(g)".

LINKS

Table of n, a(n) for n=2..20.

Evgeniy Krasko, Igor Labutin, and Alexander Omelchenko, Enumeration of 3-regular one-face maps on orientable or non-orientable surface up to all symmetries, arXiv:1901.06591 [math.CO], 2019.

CROSSREFS

Cf. A068182, A348794, A348795, A348797.

Sequence in context: A177756 A089314 A111873 * A012842 A012638 A338709

Adjacent sequences:  A348793 A348794 A348795 * A348797 A348798 A348799

KEYWORD

nonn

AUTHOR

Michael De Vlieger, Oct 31 2021

STATUS

approved

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Last modified January 25 14:14 EST 2022. Contains 350572 sequences. (Running on oeis4.)