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 A118297 #6 Mar 30 2018 10:10:45 %S A118297 22,23,33,34,44,45,55,56,66,67,77,78,88,89,99,100,2,3,4,5,6,7,8,9,10, %T A118297 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, %U A118297 8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,2,3,4,5,6 %N A118297 Start with 22 and repeatedly reverse the digits and add 1 to get the next term. %C A118297 After 16 steps enters a cycle of length 9. %H A118297 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %t A118297 NestList[IntegerReverse[#]+1&,22,100] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Mar 30 2018 *) %Y A118297 Cf. A118551. %K A118297 base,nonn %O A118297 1,1 %A A118297 Luc Stevens (lms022(AT)yahoo.com), May 14 2006