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 A118304 #6 Jun 19 2014 18:09:27 %S A118304 25,53,36,64,47,75,58,86,69,97,80,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7, %T A118304 8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3, %U A118304 4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2 %N A118304 Start with 25 and repeatedly reverse the digits and add 1 to get the next term. %C A118304 After 11 steps enters a cycle of length 9. %H A118304 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %t A118304 NestList[FromDigits[Reverse[IntegerDigits[#]]]+1&,25,100] (* _Harvey P. Dale_, Jun 19 2014 *) %Y A118304 Cf. A118551. %K A118304 base,nonn %O A118304 0,1 %A A118304 Luc Stevens (lms022(AT)yahoo.com), May 14 2006