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 A107829 #4 May 26 2024 00:00:56 %S A107829 9,1,10,8,5,6,2,11,7,4,12,14,13,15,19,18,20,21,16,3,17,22,24,23,27,26, %T A107829 28,25,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49, %U A107829 50,51,52,53,54,55,56,57,58,59,60,61 %N A107829 Indices of primes occurring in A107809. %F A107829 A107829(n) = pi(A107809(n)). %Y A107829 Cf. A107801 - A107814, A107821, A107822, A107823, A107824, A107825, A107826, A107827, A107828, A107830, A107831, A107832, A107833, A107834. %K A107829 easy,nonn %O A107829 1,1 %A A107829 _Zak Seidov_, May 24 2005