OFFSET
1,1
COMMENTS
Conjecture: {(a(n)-1)}/{10n} < n, or a(n) < 10*n^2 + 1.
The conjecture holds for 2 < n < 10^8. Heuristically, the chance of its failing for larger n is about 10^-300000 based on the integral of exp(-2.5*x/log(x)^2) using the Poisson model for numbers coprime to 10. - Charles R Greathouse IV, Feb 15 2011
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Nov 05 2003
EXTENSIONS
More terms from Ray Chandler, Nov 07 2003
STATUS
approved