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 A169581 #7 Jan 07 2013 05:48:37 %S A169581 1,2,4,5,7,9,11,12,13,14,16,20,22,23,24,25,26,27,29,31,33,35,37,38,40, %T A169581 41,43,44,46,48,52,54,56,57,58,59,60,61,62,63,64,65,67,71,73,77,79,80, %U A169581 81,82,83,84,85,86,87,88,89,90,92,94,96,100,102,104,106,107,109,112,113 %N A169581 Positions in A002260(n) and A002024(n) when canonically enumerating A038566(n)/A038567(n), the positive rational numbers <= 1. %C A169581 A038566(n) = A002260(a(n)); A038567(n) = A002024(a(n)); %C A169581 A054521(a(n)) = 1; complement of A169582. %H A169581 R. Zumkeller, <a href="/A169581/b169581.txt">Table of n, a(n) for n = 1..10000</a> %K A169581 nonn %O A169581 1,2 %A A169581 _Reinhard Zumkeller_, Dec 02 2009