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 A160701 #9 Jul 29 2012 02:28:09 %S A160701 1,2,5,14,43,144,525,2084,9005,42288,215111,1179738,6937765,43504598, %T A160701 289356385,2031636826,14995775647,115943399636,936138957225, %U A160701 7872233481696,68788474572625,623323010473012,5846701373312019 %N A160701 Duplicate of A137551. %K A160701 dead %O A160701 0,2 %A A160701 _Gary W. Adamson_, May 24 2009