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 A118074 #6 May 28 2014 14:33:26 %S A118074 1,42,65,97,120,62,67,117,752,298,933,380,124,462,305,544,486,725,568, %T A118074 906,650,97,120,62,67,117,752,298,933,380,124,462,305,544,486,725,568, %U A118074 906,650,97,120,62,67,117,752,298,933,380,124,462,305,544,486,725 %N A118074 Start with 1 and repeatedly reverse the digits and add 41 to get the next term. %C A118074 After 3 steps enters a cycle of length 18. %H A118074 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %t A118074 NestList[FromDigits[Reverse[IntegerDigits[#]]]+41&,1,60] (* _Harvey P. Dale_, May 28 2014 *) %Y A118074 Cf. A117828, A117816, A117817. %K A118074 base,nonn %O A118074 1,2 %A A118074 Luc Stevens (lms022(AT)yahoo.com), May 11 2006 %E A118074 Corrected by _Harvey P. Dale_, May 28 2014