A118602 Start with 1 and repeatedly reverse the digits and add 21 to get the next term.

1, 22, 43, 55, 76, 88, 109, 922, 250, 73, 58, 106, 622, 247, 763, 388, 904, 430, 55, 76, 88, 109, 922, 250, 73, 58, 106, 622, 247, 763, 388, 904, 430, 55, 76, 88, 109, 922, 250, 73, 58, 106, 622, 247, 763, 388, 904, 430, 55, 76, 88, 109, 922, 250, 73, 58

Offset

1,2

Comments

After 3 steps enters a cycle of length 15.

Links

Table of n, a(n) for n=1..56.

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, 1).

Mathematica

NestList[IntegerReverse[#]+21&, 1, 120] (* or *) PadRight[{1, 22, 43}, 120, {388, 904, 430, 55, 76, 88, 109, 922, 250, 73, 58, 106, 622, 247, 763}] (* Harvey P. Dale, Apr 13 2017 *)

Crossrefs

Cf. A117828, A117816, A117817.

Sequence in context: A154087 A063327 A066957 * A215146 A086679 A019508

Adjacent sequences: A118599 A118600 A118601 * A118603 A118604 A118605

Keyword

base,nonn

Author

Luc Stevens (lms022(AT)yahoo.com), May 08 2006

Extensions

Corrected by Harvey P. Dale, Apr 13 2017

Status

approved