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 A146975 #4 Jun 17 2012 12:36:27 %S A146975 0,3,8,3,24,7,48,63,16,99 %N A146975 First quintisection of A061043: A061043(5n). %K A146975 nonn,easy,less %O A146975 0,2 %A A146975 _Paul Curtz_, Nov 04 2008