OFFSET
1,6
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
FORMULA
Asymptotic mean: Limit_{m->oo} (1/m) * Sum_{k=1..m} a(k)/A076512(k) = zeta(2)*zeta(3)/zeta(6) - 1 = A082695 - 1 = 0.943596... . Amiram Eldar, Nov 21 2022
MATHEMATICA
Table[Numerator[n/EulerPhi[n] - 1], {n, 1, 100}] (* Amiram Eldar, Nov 21 2022 *)
PROG
(PARI) A076511(n) = numerator((n-eulerphi(n))/eulerphi(n)); \\ Antti Karttunen, Sep 07 2018
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Reinhard Zumkeller, Oct 15 2002
STATUS
approved