OFFSET
1,1
EXAMPLE
n=5: after A075428(5)=4 steps 1+2/(5*6)=1+1/15=16/15 -> 32/15 -> 32/5 -> 224/5 -> 2016, therefore a(5)=2016.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Sep 16 2002
STATUS
approved