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 A213715 #12 Nov 05 2012 13:56:26 %S A213715 0,1,2,3,4,5,7,8,9,11,13,15,16,17,19,21,23,24,26,28,31,32,33,35,37,39, %T A213715 40,42,44,47,48,50,52,54,56,58,60,63,64,65,67,69,71,72,74,76,79,80,82, %U A213715 84,86,88,90,92,95,96,98,100,102,104,107,110,112,115,118,120,123,127,128,129,131,133,135,136,138,140,143,144,146,148,150,152,154,156,159,160,162,164,166,168 %N A213715 a(n) = position of A179016(n) in A005187. %H A213715 Antti Karttunen, <a href="/A213715/b213715.txt">Table of n, a(n) for n = 0..8727</a> %F A213715 a(n) = A213714(A179016(n)). %o A213715 (Scheme): (define (A213715 n) (A213714 (A179016 n))) %Y A213715 Cf. A213716, A213717. %K A213715 nonn %O A213715 0,3 %A A213715 _Antti Karttunen_, Oct 26 2012 %E A213715 Offset changed from 1 to 0 by _Antti Karttunen_, Nov 05 2012