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 A086768 #8 Aug 06 2023 08:18:06 %S A086768 1,6,24,60,120,144,336,536,714,720,1320,1440,2184,2016,2880,4528,4896, %T A086768 4284,6840,7200,8064,7920,12144,12864,15540,13104,19908,20160,24360, %U A086768 17280,29760,37216,31680,29376,40320,42840,50616,41040,52416,64320,68880,48384,79464,79200,85680,72864 %N A086768 Number of conjugacy classes in the group GL(3,Z_n). %F A086768 For a prime p : a(p) = p*(p^2 - 1). %o A086768 (Magma) [Nclasses(GeneralLinearGroup(3, ResidueClassRing(n))) : n in [2..50]]; // _Robin Visser_, Aug 06 2023 %Y A086768 Cf. A064767, A062354. %K A086768 nonn,mult %O A086768 1,2 %A A086768 Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 02 2003 %E A086768 More terms from _Robin Visser_, Aug 06 2023