A118866 Start with 1 and repeatedly place the first digit at the end of the number and add 20.

1, 21, 32, 43, 54, 65, 76, 87, 98, 109, 111, 131, 331, 333, 353, 553, 555, 575, 775, 777, 797, 997, 999, 1019, 211, 132, 341, 433, 354, 563, 655, 576, 785, 877, 798, 1007, 91, 39, 113, 151, 531, 335, 373, 753, 557, 595, 975, 779, 817, 198, 1001, 31, 33, 53, 55, 75

Offset

1,2

Comments

After 24 steps the sequence enters a cycle of length 36.

Links

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

Mathematica

NestList[FromDigits[RotateLeft[IntegerDigits[#]]]+20&, 1, 60] (* Harvey P. Dale, Jun 21 2017 *)

Crossrefs

Sequence in context: A095994 A168001 A168004 * A168005 A118535 A127423

Adjacent sequences: A118863 A118864 A118865 * A118867 A118868 A118869

Keyword

base,nonn

Author

Luc Stevens (lms022(AT)yahoo.com), May 24 2006

Status

approved