OFFSET
1,1
COMMENTS
It may be that positive integers can be written as n=m^k-k (with m and k > 1) in at most one way [checked up to 10000] as well as with k=1 and m=n+1.
EXAMPLE
a(5)=2 since 5=2^3-3
CROSSREFS
KEYWORD
nonn
AUTHOR
Henry Bottomley, Sep 26 2000
STATUS
approved