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A118530
Start with 1 and repeatedly reverse the digits and add 13 to get the next term.
1
1, 14, 54, 58, 98, 102, 214, 425, 537, 748, 860, 81, 31, 26, 75, 70, 20, 15, 64, 59, 108, 814, 431, 147, 754, 470, 87, 91, 32, 36, 76, 80, 21, 25, 65, 69, 109, 914, 432, 247, 755, 570, 88, 101, 114, 424, 437, 747, 760, 80, 21, 25, 65, 69, 109, 914, 432
OFFSET
1,2
LINKS
N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
After 31 steps enters a cycle of length 18.
MATHEMATICA
NestList[FromDigits[Reverse[IntegerDigits[#]]]+13&, 1, 60] (* Harvey P. Dale, Oct 27 2015 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, May 06 2006
STATUS
approved