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 A104813 #4 Oct 01 2016 17:01:23 %S A104813 2,6,11,18,19,22,28,31,41,56,63,65,66,67,71,73,74,87,94,95,97,102,103, %T A104813 107,110,118,119,123,135,142,161,164,165,172,176,177,178,180,193,201, %U A104813 202,205,212,228,238,239,240,263,264,267 %N A104813 Positions of 5 in partition of decimal expansion of Pi A104807. %Y A104813 Cf. A104807-A104818. %K A104813 nonn,base %O A104813 1,1 %A A104813 _Zak Seidov_, Mar 27 2005