OFFSET
1,2
COMMENTS
After 24 steps the sequence enters a cycle of length 36.
MATHEMATICA
NestList[FromDigits[RotateLeft[IntegerDigits[#]]]+20&, 1, 60] (* Harvey P. Dale, Jun 21 2017 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), May 24 2006
STATUS
approved