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A091590 Number of terms in the simple continued fraction for the 10^n-th harmonic number, H_n = sum_{k=1 to n} (1/k). 0
1, 8, 68, 834, 8356, 84548, 841817, 8425934, 84277586 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Conjecture: lim n -> infinity, a(n)/10^n -> C = 12*ln(2)/Pi^2 = 0.842... - Benoit Cloitre (benoit7848c(AT)orange.fr), May 04 2002

REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 156.

LINKS

Eric Weisstein's World of Mathematics, Harmonic Number

MATHEMATICA

s = 0; k = 1; Do[ While[s = s + 1/k; k < 10^n, k++ ]; Print[ Length[ ContinuedFraction[s]]]; k++, {n, 0, 6}]

CROSSREFS

Cf. A055573. n-th harmonic number H(m) = A001008(n)/A002805(n).

Sequence in context: A167859 A113357 A030992 * A087487 A178368 A152279

Adjacent sequences:  A091587 A091588 A091589 * A091591 A091592 A091593

KEYWORD

cofr,hard,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 22 2004

EXTENSIONS

Corrected and extended by Eric Weisstein (eric(AT)weisstein.com), Jan 23, 2004

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Last modified February 14 23:44 EST 2012. Contains 205689 sequences.