A348804 - OEIS

%I #7 Jan 17 2025 12:30:01

%S 0,0,0,8,128,1890,27036,379491,5229092,70805740,944106760,12426068215,

%T 161793730426,2087922762430,26745380615078

%N a(n) = number of non-orientable genus 3 maps with n edges.

%H Evgeniy Krasko and Alexander Omelchenko, <a href="https://arxiv.org/abs/1712.10139">Enumeration of Unsensed Orientable Maps on Surfaces of a Given Genus</a>, arXiv:1712.10139 [math.CO], 2017, see Appendix Table 5.

%Y Column k=3 of A380235.

%Y Cf. A348802, A348803, A348805, A348806, A348807, A348808, A348809, A348810, A348811.

%K nonn,more

%O 0,4

%A _Michael De Vlieger_, Nov 01 2021