OFFSET
1,1
EXAMPLE
3->[3r+3]=7 (step 1)
7->[7r+7]=18 (step 2)
18->[18/(r+1)]=6 (step 3)
6->[6/(r+1)]=2 (step 4)
2->[2/(r+1)]=0 (step 5),
so that a(3)=5.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Nov 26 2010
STATUS
approved