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 A177716 #4 Mar 30 2012 18:40:08 %S A177716 2,2,3,3,5,5,7,7,11,11,11,11,11,11,13,13,17,17,19,19,19,19,23,23,23, %T A177716 23,23,23,29,29,29,29,31,31,31,31,37,37,37,37,37,37,41,41,43,43,47,47, %U A177716 47,47,47,47,47,47,47,47,47,47,53,53,53,53,53,53,53,53,53,53,59,59,59,59 %N A177716 The k-th prime repeated A073124(k) times, k = 1,2,3.... %Y A177716 Cf. A109763. %K A177716 nonn,less %O A177716 1,1 %A A177716 _Giovanni Teofilatto_, May 12 2010 %E A177716 Incorrect formula removed; precise definition added - _R. J. Mathar_, Aug 23 2010