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 A118618 #6 Jul 20 2015 11:05:56 %S A118618 1,33,65,88,120,53,67,108,833,370,105,533,367,795,629,958,891,230,64, %T A118618 78,119,943,381,215,544,477,806,640,78,119,943,381,215,544,477,806, %U A118618 640,78,119,943,381,215,544,477,806,640,78,119,943,381,215,544,477,806,640,78 %N A118618 Start with 1 and repeatedly reverse the digits and add 32 to get the next term. %C A118618 After 19 steps enters a cycle of length 9. %H A118618 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %H A118618 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 1). %Y A118618 Cf. A117828, A117816, A117817. %K A118618 base,nonn %O A118618 1,2 %A A118618 Luc Stevens (lms022(AT)yahoo.com), May 08 2006