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A076659 Denominator of f(n), where for n>2, f(n) = (n-1)/f(n-1)+(n-2)/f(n-2), with f(1) = 1, f(2) = 2. 1
1, 1, 1, 2, 10, 155, 2573, 743265, 12908354895, 75801161569084271, 3405519155619352610554892553, 1003520149619351981752459025306803116214254621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

f(n) -> Sqrt[2n], a slowly converging sequence.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

f(3) = 2/f(2)+1/f(1) = 2/2+1/1 = 2/1, therefore in the sequence, 3rd term is 1.

PROG

(Maxima)

a[1]:1$

a[2]:2$

a[n]:=(n-1)/a[n-1]+(n-2)/a[n-2];

makelist(ratdenom(a[n]), n, 1, 15); /* Martin Ettl, Oct 30 2012*/

CROSSREFS

Cf. A076658.

Sequence in context: A007080 A231517 A134088 * A197313 A294352 A007131

Adjacent sequences:  A076656 A076657 A076658 * A076660 A076661 A076662

KEYWORD

nonn,frac

AUTHOR

Zak Seidov, Oct 24 2002

STATUS

approved

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Last modified August 25 05:19 EDT 2019. Contains 326318 sequences. (Running on oeis4.)