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 A075103 #5 Mar 30 2012 18:50:25 %S A075103 2,2,8,4,2016,1350550961316868219904983232715008, %T A075103 45663638338374385821895380178233982310400,32,10515968, %U A075103 153189575599610658965347775471616,34816,116736 %N A075103 Integer reached in A075102. %K A075103 nonn %O A075103 1,1 %A A075103 _Reinhard Zumkeller_, Sep 02 2002, May 25 2009