A118512 Define sequence S_m by: initial term = m, reverse digits and add 1 to get next term. Entry shows S_11. This reaches a cycle of length 9 in 18 steps.

11, 12, 22, 23, 33, 34, 44, 45, 55, 56, 66, 67, 77, 78, 88, 89, 99, 100, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10

Offset

1,1

Links

Table of n, a(n) for n=1..90.

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, 1).

Mathematica

NestList[FromDigits[Reverse[IntegerDigits[#]]]+1&, 11, 90] (* Harvey P. Dale, Oct 16 2011 *)
Join[{11, 12, 22, 23, 33, 34, 44, 45, 55, 56, 66, 67, 77, 78, 88, 89, 99, 100}, LinearRecurrence[{0, 0, 0, 0, 0, 0, 0, 0, 1}, {2, 3, 4, 5, 6, 7, 8, 9, 10}, 72]] (* Ray Chandler, Jul 18 2015 *)
NestList[IntegerReverse[#]+1&, 11, 90] (* Harvey P. Dale, Oct 13 2024 *)

Crossrefs

Cf. A118510, A117831, A117230.

Sequence in context: A367612 A367340 A101233 * A112651 A215027 A331194

Adjacent sequences: A118509 A118510 A118511 * A118513 A118514 A118515

Keyword

nonn,base

Author

N. J. A. Sloane, May 06 2006

Status

approved