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 A076511 Numerator of cototient(n)/totient(n). 5
 0, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 2, 1, 4, 7, 1, 1, 2, 1, 3, 3, 6, 1, 2, 1, 7, 1, 4, 1, 11, 1, 1, 13, 9, 11, 2, 1, 10, 5, 3, 1, 5, 1, 6, 7, 12, 1, 2, 1, 3, 19, 7, 1, 2, 3, 4, 7, 15, 1, 11, 1, 16, 3, 1, 17, 23, 1, 9, 25, 23, 1, 2, 1, 19, 7, 10, 17, 9, 1, 3, 1, 21, 1, 5, 21, 22, 31, 6, 1, 11, 19, 12, 11 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 LINKS Antti Karttunen, Table of n, a(n) for n = 1..65537 FORMULA a(n) = A051953(n)/A009195(n). 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 Cf. A076512 (denominators), A000010, A009195, A051953, A082695, A109395. Sequence in context: A330755 A316431 A319567 * A280688 A285728 A157925 Adjacent sequences: A076508 A076509 A076510 * A076512 A076513 A076514 KEYWORD nonn,frac AUTHOR Reinhard Zumkeller, Oct 15 2002 STATUS approved

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Last modified March 28 05:31 EDT 2023. Contains 361577 sequences. (Running on oeis4.)