OFFSET
1,1
COMMENTS
323203999999676796 takes 22 iterations to reach 15, but it probably is not the next term.
One could prefix a(0)=1 and change the definition to "... reach a fixed point, 1 or 15." - M. F. Hasler, Nov 08 2015
CROSSREFS
KEYWORD
more,nonn,base
AUTHOR
Jason Earls, Jun 03 2004
EXTENSIONS
Offset corrected and a(13) from Donovan Johnson, Oct 28 2010
STATUS
approved