1,1

Table of n, a(n) for n=1..104.

Eric Weisstein's World of Mathematics, Continued Fraction.

Eric Weisstein's World of Mathematics, Harmonic Mean.

a(10)=5 because 10th prime is 29, harmonic mean of 10 and 29 is 580/39 and continued fraction for 580/39 has terms {14,1,6,1,4} and length 5.

A107918[n_]:=Length[ContinuedFraction[HarmonicMean[{n, Prime[n]}]]]

Cf. A107919.

Sequence in context: A137779 A191246 A248222 * A242392 A002963 A046677

Adjacent sequences: A107915 A107916 A107917 * A107919 A107920 A107921

nonn

Zak Seidov, May 28 2005

approved