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 A099058 #6 Mar 30 2012 17:36:53 %S A099058 28,8128,8589869056,2305843008139952128, %T A099058 191561942608236107294793378084303638130997321548169216, %U A099058 14474011154664524427946373126085988481573677491474835889066354349131199152128 %N A099058 A bisection of A000396. %K A099058 nonn %O A099058 0,1 %A A099058 _N. J. A. Sloane_, Nov 15 2004 %E A099058 More terms from _Joshua Zucker_, May 12 2006