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 A077271 #3 May 11 2007 03:00:00 %S A077271 4,8,9,121,343,1331,10201,14641,94249,1030301,104060401 %N A077271 Duplicate of A072037. %K A077271 dead %O A077271 1,1