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 A348817 #5 Nov 01 2021 22:31:00 %S A348817 0,1,13,2576,2081393,3309962320,8755277273334,35815698613833466, %T A348817 214713439275724149414,1808298469877117320495867 %N A348817 a(n) = number of loopless diagrams by number of K_4 up to all symmetries. %H A348817 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 3. %Y A348817 Cf. A190830, A348815, A348816; A003437, A292409, A348820, A348823. %K A348817 nonn,more %O A348817 1,3 %A A348817 _Michael De Vlieger_, Nov 01 2021