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 A065779 #2 May 11 2007 03:00:00 %S A065779 25,225,1225,81225,16281225,7077116281225,1642681227077116281225 %N A065779 Duplicate of A061839. %K A065779 dead %O A065779 1,1