Cont Frac of Harmonic Numbers
Leroy Quet
qq-quet at mindspring.com
Sat Dec 20 02:04:55 CET 2003
(Posted to seqfan and sent to Benoit Cloitre, and perhaps later to be
posted to sci.math)
Just browsing the OEIS, I came across this old sequence of mine (which
has had some comments added since I originally sent the sequence to the
EIS).
http://www.research.att.com/cgi-bin/access.cgi/as/njas/sequences/eisA.cgi?A
num=A055573
*the sequence is the number of terms in the continued fraction of
sum{k=1 to n} 1/k
(the k_th harmonic number).
What has intrigued me is the comment from Benoit Cloitre:
"lim n -> infinity a(n)/n = C = 0.84... "
How is it proved that C exists? What are more digits of C? And, of
course, does C have a closed-form?
And an old question related to the sequence:
Are there only a finite number of times each particular integer appears
in the sequence?
(It is very well known that the integer 1 appears only appears once, as
an example.)
And finally,
what are the asymptotics of the related sequence:
http://www.research.att.com/cgi-bin/access.cgi/as/njas/sequences/eisA.cgi?A
num=A058027
(the SUM of the terms in the continued fractions of the harmonic numbers)
thanks,
Leroy Quet
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