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A118535
Start with 1 and repeatedly reverse the digits and add 20 to get the next term.
2
1, 21, 32, 43, 54, 65, 76, 87, 98, 109, 921, 149, 961, 189, 1001, 1021, 1221, 1241, 1441, 1461, 1661, 1681, 1881, 1901, 1111, 1131, 1331, 1351, 1551, 1571, 1771, 1791, 1991, 2011, 1122, 2231, 1342, 2451, 1562, 2671, 1782, 2891, 2002, 2022
OFFSET
1,2
LINKS
N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.
FORMULA
Never reaches a cycle (see A117816).
MATHEMATICA
NestList[IntegerReverse[#]+20&, 1, 50] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Aug 14 2020 *)
CROSSREFS
Sequence in context: A168004 A118866 A168005 * A127423 A319477 A035137
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, May 07 2006
STATUS
approved