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 A105858 #3 Mar 30 2012 18:50:49 %S A105858 0,1,2,3,5,8,12,17,28,32,50,60,66,69,106,107,133,200,221,224,254,363, %T A105858 369,386,448,484,491,517,620,680,723,844,865,900,918,988,1030,1084, %U A105858 1221,1255,1260,1409,1446,1467,1513,1638,1737,1796,1840,1930,1975,2012,2036 %N A105858 Records in A104647. %C A105858 a(n) = A104647(A105857(n)). %K A105858 nonn %O A105858 0,3 %A A105858 _Reinhard Zumkeller_, Apr 23 2005