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A348796
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Numbers of 3-regular one-face rooted maps on non-orientable surfaces.
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4
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6, 128, 3780, 163840, 8828820, 587202560, 45821335560, 4133906022400, 421946699674500, 48151737348915200, 6070544859205827000, 838225443769915801600, 125787689149526729325000, 20385642792484352294912000, 3548258423062128985899690000, 660168656191813264718430208000, 130746565669943973430227429382500, 27463016097579431812286696652800000, 6098023559259606741021710317037175000
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OFFSET
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2,1
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COMMENTS
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In the paper p. 18, Table 3, this sequence is designated "tau^(3)_(-)(g)".
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LINKS
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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.
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CROSSREFS
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Cf. A068182, A348794, A348795, A348797.
Sequence in context: A177756 A089314 A111873 * A012842 A012638 A338709
Adjacent sequences: A348793 A348794 A348795 * A348797 A348798 A348799
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KEYWORD
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nonn
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AUTHOR
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Michael De Vlieger, Oct 31 2021
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STATUS
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approved
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