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 A118155 #13 May 26 2014 23:48:47 %S A118155 1,60,65,115,570,134,490,153,410,73,96,128,880,147,800,67,135,590,154, %T A118155 510,74,106,660,125,580,144,500,64,105,560,124,480,143,400,63,95,118, %U A118155 870,137,790,156,710,76,126,680,145,600,65,115,570,134,490,153,410 %N A118155 Start with 1 and repeatedly reverse the digits and add 59 to get the next term. %C A118155 After 2 steps enters a cycle of 45. %H A118155 Vincenzo Librandi, <a href="/A118155/b118155.txt">Table of n, a(n) for n = 1..1000</a> %H A118155 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %t A118155 NestList[FromDigits[Reverse[IntegerDigits[#]]]+59&,1,80] (* _Harvey P. Dale_, Feb 25 2014 *) %Y A118155 Cf. A117828, A117816, A117817. %K A118155 base,nonn,less %O A118155 1,2 %A A118155 Luc Stevens (lms022(AT)yahoo.com), May 14 2006 %E A118155 Corrected by _Harvey P. Dale_, Feb 25 2014