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 A037447 #6 Aug 14 2023 19:55:17 %S A037447 1,4,15,137,1411,88044 %N A037447 Number of conjugacy classes of subgroups of the Chevalley group A_n(2) (the group of nonsingular n X n matrices over GF(2)). %o A037447 (Magma) [#Subgroups(GL(n,2)) : n in [1..6]]; // _Robin Visser_, Aug 14 2023 %Y A037447 Cf. A062240, A002884. %K A037447 nonn,hard,more %O A037447 1,2 %A A037447 Ahmed Fares (ahmedfares(AT)my-deja.com), Jun 30 2001 %E A037447 a(5)-a(6) from _Robin Visser_, Aug 14 2023