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 A117800 Start with 1 and repeatedly reverse the digits and add 5 to get the next term. 9
 1, 6, 11, 16, 66, 71, 22, 27, 77, 82, 33, 38, 88, 93, 44, 49, 99, 104, 406, 609, 911, 124, 426, 629, 931, 144, 446, 649, 951, 164, 466, 669, 971, 184, 486, 689, 991, 204, 407, 709, 912, 224, 427, 729, 932, 244, 447, 749, 952, 264, 467, 769, 972, 284, 487, 789, 992, 304, 408 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS N. J. A. Sloane, Table of n, a(n) for n = 0..414 (shows two full cycles) N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki. FORMULA After 1 step enters a cycle of length 207. It appears that there is a unique cycle of length 207 for the reverse-and-add-5 problem. Klaus Brockhaus has done an extensive search without finding any further cycle of length 207. There are many cycles of lengths 36 and 756. See A118878. CROSSREFS Cf. A117828, A118878, A118879. Sequence in context: A024952 A278833 A284293 * A118847 A111256 A315506 Adjacent sequences:  A117797 A117798 A117799 * A117801 A117802 A117803 KEYWORD nonn,base AUTHOR N. J. A. Sloane, following discussions with Luc Stevens, May 04 2006 STATUS approved

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Last modified September 27 19:34 EDT 2021. Contains 347694 sequences. (Running on oeis4.)