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 A116653 #12 Jul 21 2022 01:28:21 %S A116653 0,1,0,1,3,4,12,15,87,61,143,168,1254,1079,5281,7619,56670,58957 %N A116653 Number of connected even permutation groups; conjugacy classes of connected subgroups of the alternating group A_n; atomic species based on even permutation groups. %H A116653 L. Naughton, G. Pfeiffer, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL16/Naughton/naughton2.html">Integer Sequences Realized by the Subgroup Pattern of the Symmetric Group</a>, J. Int. Seq. 16 (2013) #13.5.8 %H A116653 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %F A116653 Inverse Euler transform of A029726. Define b(n), c(n): b(1)=c(0)=0. b(k)=A116654(k), k>1. c(k)=A029726(k), k>0. a(n) is Dirichlet convolution of b and c. %Y A116653 Unlabeled version of A116652. %K A116653 nonn,hard %O A116653 0,5 %A A116653 _Christian G. Bower_, Feb 23 2006 %E A116653 a(14)-a(17) from _Vaclav Kotesovec_, Jul 21 2022