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 A107832 #2 Mar 30 2012 17:26:16 %S A107832 12,2,6,5,7,4,15,13,8,10,1,9,11,14,16,3,17,22,19,18,20,21,23,24,25,28, %T A107832 26,27,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49, %U A107832 50,51,52,53,54,55,56,57,58,59,60,61 %N A107832 Indices of primes occurring in A107812. %F A107832 A107832(n)=pi(A107812(n)) %Y A107832 Cf. A107801 - A107814, A107821, A107822, A107823, A107824, A107825, A107826, A107827, A107828, A107829, A107830, A107831, A107833, A107834. %K A107832 easy,nonn %O A107832 1,1 %A A107832 _Zak Seidov_, May 24 2005