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 A119031 Add and Reverse: a(n) = the reversal of (a(n-1)+d), case a(1)=1 and d=4. 5
 1, 5, 9, 31, 53, 75, 97, 101, 501, 505, 905, 909, 319, 323, 723, 727, 137, 141, 541, 545, 945, 949, 359, 363, 763, 767, 177, 181, 581, 585, 985, 989, 399, 304, 803, 708, 217, 122, 621, 526, 35, 93, 79, 38, 24, 82, 68, 27, 13, 71, 57, 16, 2, 6, 1, 5, 9, 31, 53, 75, 97 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Cycle of length 54. [Corrected by N. J. A. Sloane, Aug 02 2009] LINKS MATHEMATICA Nest[Append[#, IntegerReverse[#[[-1]] + 4]] &, {1}, 60] (* Michael De Vlieger, Mar 14 2021 *) PROG (Python) a = 1 counter = 0 while counter < 60:     print(a)     counter += 1     a = int(str(a + 4)[::-1])  # Mattew Bondar, Mar 14 2021 CROSSREFS All of A003608, A016081, A016082 (and possibly others) eventually reach the trajectory of 1 shown in A119031. Cf. A055198. Cf. A016081 (case a(1)=3). Sequence in context: A343420 A214902 A049602 * A271129 A271152 A271164 Adjacent sequences:  A119028 A119029 A119030 * A119032 A119033 A119034 KEYWORD nonn,base AUTHOR Zak Seidov, May 09 2006 STATUS approved

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Last modified July 26 13:37 EDT 2021. Contains 346294 sequences. (Running on oeis4.)