OFFSET
1,2
COMMENTS
After 23 steps enters a cycle of length 18.
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).
CROSSREFS
KEYWORD
base,nonn,easy
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), May 08 2006
EXTENSIONS
a(23) corrected by Georg Fischer, Jul 17 2020
STATUS
approved