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 A118214 #6 May 26 2014 23:48:47 %S A118214 1,68,153,418,881,255,619,983,456,721,194,558,922,296,759,1024,4268, %T A118214 8691,2035,5369,9702,2146,6479,9813,3256,6590,1023,3268,8690,1035, %U A118214 5368,8702,2145,5479,9812,2256,6589,9923,3366,6700,143,408,871,245,609,973 %N A118214 Start with 1 and repeatedly reverse the digits and add 67 to get the next term. %C A118214 After 43 steps enters a cycle of 99. %H A118214 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %t A118214 NestList[FromDigits[Reverse[IntegerDigits[#]]]+67&,1,50] (* _Harvey P. Dale_, Oct 14 2012 *) %Y A118214 Cf. A117828, A117816, A117817. %K A118214 base,nonn,less %O A118214 1,2 %A A118214 Luc Stevens (lms022(AT)yahoo.com), May 14 2006