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 A118616 #10 Apr 29 2022 19:29:50
%S A118616 1,30,32,52,54,74,76,96,98,118,840,77,106,630,65,85,87,107,730,66,95,
%T A118616 88,117,740,76,96,98,118,840,77,106,630,65,85,87,107,730,66,95,88,117,
%U A118616 740,76,96,98,118,840,77,106,630,65,85,87,107,730,66,95,88,117,740,76,96,98
%N A118616 Start with 1 and repeatedly reverse the digits and add 29 to get the next term.
%C A118616 After 6 steps enters a cycle of length 18.
%H A118616 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki.
%H A118616 <a href="/index/Rec#order_18">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%t A118616 NestList[29+IntegerReverse[#]&,1,70] (* or *) PadRight[{1,30,32,52,54,74},70,{730,66,95,88,117,740,76,96,98,118,840,77,106,630,65,85,87,107}] (* _Harvey P. Dale_, Apr 29 2022 *)
%Y A118616 Cf. A117828, A117816, A117817.
%K A118616 base,nonn
%O A118616 1,2
%A A118616 Luc Stevens (lms022(AT)yahoo.com), May 08 2006