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 A144814 #2 Mar 30 2012 16:51:01 %S A144814 10,13,6,12,112,11114,1733,270,12223,7128,11122225,33991010,13913661, %T A144814 2107998,12222775,33910130,131212367,56113213,6837229,4201627,266366, %U A144814 112430,131359,7981,969,278,134,119,47,15,23,9,22,15 %N A144814 Trajectory of 10 under iteration of the map k -> A087712(k). %C A144814 33 steps to see a repeat. %Y A144814 Cf. A087712, A098282. %K A144814 nonn %O A144814 0,1 %A A144814 _N. J. A. Sloane_, Feb 18 2009