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 A127835 #5 Aug 29 2014 08:43:24 %S A127835 1,1,2,2,4,2,6,2,6,4,10,4,12,6,8,4,16,6,18,8,12 %N A127835 (Order of Galois group of Chebyshev polynomial)/(order of polynomial); or A124827(n)/n. %Y A127835 Cf. A124827. %K A127835 nonn,uned,more %O A127835 1,3 %A A127835 _Artur Jasinski_, Feb 02 2007