This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A348820 #5 Nov 01 2021 22:31:24 %S A348820 0,1,42,112418,1105696796,24178822553773,1029696155560021174, %T A348820 77938101941693076258854 %N A348820 a(n) = number of loopless diagrams by number of K_5 up to all symmetries. %H A348820 Evgeniy Krasko, Igor Labutin, and Alexander Omelchenko, <a href="https://arxiv.org/abs/1709.03218">Enumeration of Labelled and Unlabelled Hamiltonian Cycles in Complete k-partite Graphs</a>, arXiv:1709.03218 [math.CO], 2017. See Appendix Table 4. %Y A348820 Cf. A190833, A348818, A348819; A003437, A292409, A348817, A348823. %K A348820 nonn,more %O A348820 1,3 %A A348820 _Michael De Vlieger_, Nov 01 2021