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 A065558 #5 May 23 2013 14:43:07 %S A065558 1,2,4,6,6,8,8,12,12,12,12,24,14,16,24,24,18,24,20,36,32,24,24,48 %N A065558 Let G_n be the group of invertible 2 X 2 matrices mod n (sequence A000252). a(n) is the maximal degree of an irreducible representation of G_n. %C A065558 a(n) is multiplicative and for an odd prime p : a(p) = p + 1 . The number of irreducible representations of G_n is in sequence A062354. %C A065558 Conjecture: a(2n) = 2*A001615(n). - _Ralf Stephan_, Mar 26 2004 %Y A065558 A000252, A062354 %K A065558 nonn %O A065558 1,2 %A A065558 Dan Fux (dan.fux(AT)OpenGaia.com or danfux(AT)OpenGaia.com), Nov 29 2001