OFFSET
1,3
FORMULA
a(n) appears to be asymptotic to 4*n.
More generally the sequence (a(k)) of k such that frac(x^k)=frac(x^m*frac(x^(k-m))) for x=p/q>1 rational and m fixed integer appears to be asymptotic to q^m*k.
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Nov 07 2003
STATUS
approved