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 A075759 #3 May 11 2007 03:00:00 %S A075759 1,6,22,159,1044,9121,78132,748719,7161484,70800861,699869892, %T A075759 6978353179 %N A075759 Duplicate of A000993. %K A075759 dead %O A075759 0,2