Astronomical ratio, convention for continued fractions
Richard Guy
rkg at cpsc.ucalgary.ca
Wed Jun 7 20:53:18 CEST 2006
Compare The Book of Numbers, p.177.
Should it be 13 or 12 ???? R.
On Wed, 7 Jun 2006, Andrew Plewe wrote:
> I was reading about the Antikythera Mechanism at The Register:
>
> http://www.theregister.co.uk/2006/06/07/antikythera_mechanism/
>
> and while doing further Googling came across this AMS article detailing a
> continued fraction for computing the Astronomical ratio:
>
> http://www.ams.org/featurecolumn/archive/kyth3.html
>
>
> 13.368267.. = [13, 2, 1, 2, 1, 1, 17, ...]
>
> 1
> = 13 + ------------------------
> 1
> 2+ ---------------------
> 1
> 1+ ------------------
> 1
> 2+ ---------------
> 1
> 1+ ------------
> 1
> 1+ --------
> 1
> 17+ ----
> etc
>
> Anyway, I thought this might be of general interest to the list and worth
> adding to the OEIS if it isn't already in there. Would it be best to submit
> this as a decimal expansion, with the continued fraction listed in the
> comments or formula section? I see that the decimal expansion and continued
> fractions are listed as seperate sequences for the constant Pi but I'm not
> sure if people generally hold to this convention. Thanks!
>
> -Andrew Plewe-
>
>
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