A118075 - OEIS

%I #6 Oct 05 2014 10:23:02

%S 1,43,76,109,943,391,235,574,517,757,799,1039,9343,3481,1885,5923,

%T 3337,7375,5779,9817,7231,1369,9673,3811,1225,5263,3667,7705,5119,

%U 9157,7561,1699,10003,30043,34045,54085,58087,78127,72229,92269,96271,17311,11413

%N Start with 1 and repeatedly reverse the digits and add 42 to get the next term.

%C After 245 steps enters a cycle of length 57. Sequence gives first 50 terms. Cycle : 985, 631, 178, 913, 361, 205, 544, 487, 826, 670, 118, 853, 400, 46, 106, 643, 388, 925, 571, 217, 754, 499, 1036, 6343, 3478, 8785, 5920, 337, 775, 619, 958, 901, 151, 193, 433, 376, 715, 559, 997, 841, 190, 133, 373, 415, 556, 697, 868, 880, 130, 73, 79, 139, 973, 421, 166, 703, 349, 985 ...

%H N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki.

%t NestList[FromDigits[Reverse[IntegerDigits[#]]]+42&,1,50] (* _Harvey P. Dale_, Oct 05 2014 *)

%Y Cf. A117828, A117816, A117817.

%K base,nonn

%O 1,2

%A Luc Stevens (lms022(AT)yahoo.com), May 11 2006

%E Corrected by _Harvey P. Dale_, Oct 05 2014