A348796 Numbers of 3-regular one-face rooted maps on non-orientable surfaces.

6, 128, 3780, 163840, 8828820, 587202560, 45821335560, 4133906022400, 421946699674500, 48151737348915200, 6070544859205827000, 838225443769915801600, 125787689149526729325000, 20385642792484352294912000, 3548258423062128985899690000, 660168656191813264718430208000, 130746565669943973430227429382500, 27463016097579431812286696652800000, 6098023559259606741021710317037175000

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