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 A053784 Harmonic means of (1+e)-divisors of (1+e)-harmonic numbers. 3
 1, 2, 3, 5, 6, 9, 9, 10, 11, 15, 15, 14, 8, 9, 17, 17, 12, 21, 19, 16, 14, 18, 29, 26, 29, 21, 20, 17, 24, 28, 22, 27, 39, 24, 30, 42, 23, 42, 48, 33, 26, 54, 41, 35, 37, 36, 34, 39, 31, 44, 40, 36, 38, 46, 51, 55, 77, 41, 60, 77, 54, 57, 88, 47, 43, 45, 46, 99 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS If n = Product p(i)^r(i), d = Product p(i)^s(i) and s(i) = 0 or s(i) divides r(i), then d is a (1+e)-divisor of n. LINKS Amiram Eldar, Table of n, a(n) for n = 1..100 MATHEMATICA f[p_, e_] := (DivisorSigma[0, e] + 1)/(p^e + DivisorSum[e, p^(e - #) &]); h[n_] := n*Times @@ (f @@@ FactorInteger[n]); Select[h /@ Range[10^5], IntegerQ] (* Amiram Eldar, Sep 07 2019*) CROSSREFS Cf. A049599, A051378. Sequence in context: A118809 A121048 A075389 * A036697 A131292 A276476 Adjacent sequences:  A053781 A053782 A053783 * A053785 A053786 A053787 KEYWORD nonn AUTHOR Naohiro Nomoto, Apr 14 2001 EXTENSIONS More terms from Amiram Eldar, Sep 07 2019 STATUS approved

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Last modified October 19 13:01 EDT 2019. Contains 328222 sequences. (Running on oeis4.)