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 A089153 #2 May 11 2007 03:00:00 %S A089153 1,6,59,812,14389,104038,534113,15837352,177575597,6681333014 %N A089153 Duplicate of A075136. %K A089153 dead %O A089153 1,2