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 A120218 Start with 100103 and repeatedly reverse the digits and add 2 to get the next term. 6
 100103, 301003, 300105, 501005, 500107, 701007, 700109, 901009, 900111, 111011, 110113, 311013, 310115, 511015, 510117, 711017, 710119, 911019, 910121, 121021, 120123, 321023, 320125, 521025, 520127, 721027, 720129, 921029, 920131, 131031 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Let T(S,Q) be the sequence obtained by starting with S and repeatedly reversing the digits and adding Q to get the next term. This is T(100103,2). 100103 is the first S for which T(S,2) reaches a cycle of length 900. The cycle is simply the first 900 terms, which then repeat. A full period is given in the table. LINKS Klaus Brockhaus, Table of n, a(n) for n = 1..900 N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki. Index entries for linear recurrences with constant coefficients, order 900. MATHEMATICA NestList[FromDigits[Reverse[IntegerDigits[#]]]+2&, 100103, 30] (* Harvey P. Dale, Aug 14 2012 *) CROSSREFS Cf. A117521, A118514, A120214, A120215, A120216, A120217. Sequence in context: A182092 A249855 A120217 * A365375 A235901 A251171 Adjacent sequences: A120215 A120216 A120217 * A120219 A120220 A120221 KEYWORD nonn,base AUTHOR Klaus Brockhaus, Jun 11 2006 STATUS approved

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Last modified April 14 00:20 EDT 2024. Contains 371652 sequences. (Running on oeis4.)