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 A118298 #6 May 26 2014 23:48:48 %S A118298 23,33,34,44,45,55,56,66,67,77,78,88,89,99,100,2,3,4,5,6,7,8,9,10,2,3, %T A118298 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, %U A118298 10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8 %N A118298 Start with 23 and repeatedly reverse the digits and add 1 to get the next term. %C A118298 After 15 steps enters a cycle of length 9. %H A118298 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %F A118298 a(n)=A118297(n+1). [From _R. J. Mathar_, Aug 08 2008] %Y A118298 Cf. A118551. %K A118298 base,nonn %O A118298 1,1 %A A118298 Luc Stevens (lms022(AT)yahoo.com), May 14 2006