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 A066115 #17 Dec 23 2023 14:29:22 %S A066115 0,1,2,3,4,6,5,7,7,8,7,11,8,10,10,11,10,14,11,15,16,14,13,19,16,16,17, %T A066115 19,16,22,17,21,19,19,20,27,20,22,22,28,22,28,23,27,28,25,25,33,28,30, %U A066115 28,30,28,34,31,36,31,31,31,42,32,34,37,37,36,39,35,40 %N A066115 Number of conjugacy classes of maximal subgroups of the symmetric group S_n. %H A066115 Eric M. Schmidt, <a href="/A066115/b066115.txt">Table of n, a(n) for n = 1..1000</a> %H A066115 M. W. Liebeck, C. E. Praeger and J. Saxl, <a href="https://doi.org/10.1016/0021-8693(87)90223-7">A classification of the maximal subgroups of the finite alternating and symmetric groups</a>, J. Algebra 111(1987), no. 2, 365-383; Math. Rev. 89b:20008. %o A066115 (GAP) %o A066115 # GAP 4.2 %o A066115 Length( ConjugacyClassesMaximalSubgroups( SymmetricGroup( n ) ) ); %o A066115 (GAP) List([2..50],i->Length(MaximalSubgroupClassReps(SymmetricGroup(i)))); %K A066115 nonn %O A066115 1,3 %A A066115 _Reiner Martin_, Dec 30 2001 %E A066115 More terms from _Alexander Hulpke_, Feb 19 2002 %E A066115 More terms from _Eric M. Schmidt_, Jul 21 2017