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 A167514 #4 Mar 30 2012 18:52:35 %S A167514 1,1,2,3,4,5,6,7,2,8,9,3,10,11,4,5,12,13,6,14,15,7,8,9,10,16,17,18,19, %T A167514 11,12,13,20,21,22,23,14,15,16,17,24,25,26,27,28,29,18,19,30,31,20,32, %U A167514 33,21,22,23,34,35,24,36,37,25,26,38,39,27,28,29,40,41,30,31,32,33,34 %N A167514 Index of prime(n) in A007510 or in A001097. %C A167514 A007510 U A001097 = A000040. %F A167514 A007510(a(n))=n or A001097(a(n))=n. %Y A167514 Cf. A000040, A001097, A007510. %K A167514 nonn %O A167514 1,3 %A A167514 _Juri-Stepan Gerasimov_, Nov 05 2009 %E A167514 Definition corrected by _R. J. Mathar_, May 30 2010