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 A123643 #3 Mar 30 2012 18:50:55 %S A123643 1,2,4,5,7,12,24,25,27,32,59,60,69,74,86,111,126,135,139,163,222,226, %T A123643 365,371,372,478,540,609,795,917,965,989,1645,2311,2639,2695,2771, %U A123643 2794,3034,3096,3773,4134,4645,4987,5263,5845,6468,8373,11225,11471,12989 %N A123643 Record values in A062039. %C A123643 a(n) = A062039(A123644(n)). %K A123643 nonn %O A123643 0,2 %A A123643 _Reinhard Zumkeller_, Oct 04 2006