# [seqfan] Re: Reciprocal Recaman

franktaw at netscape.net franktaw at netscape.net
Sat Nov 16 01:34:20 CET 2013

```I would be surprised if they are.

-----Original Message-----
From: David Wilson <davidwwilson at comcast.net>
To: 'Sequence Fanatics Discussion list' <seqfan at list.seqfan.eu>
Sent: Fri, Nov 15, 2013 6:04 pm
Subject: [seqfan] Re: Reciprocal Recaman

Do we know for sure that the denominators are A002805?

> -----Original Message-----
> From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Neil
> Sloane
> Sent: Friday, November 15, 2013 5:57 AM
> To: Sequence Fanatics Discussion list
> Subject: [seqfan] Re: Reciprocal Recaman
>
> I added the numerators of f(n) as A231692. The denominators are
A002805.
> I also added this to the Index to Fractions on the Wiki side.
> Perhaps someone else (Don?) could add Don's sequence.
> Neil
>
>
> On Fri, Nov 15, 2013 at 4:51 AM, Don Reble <djr at nk.ca> wrote:
>
> > f(0) = 0
> >> f(n) = f(n-1) - 1/n if >= 0, else f(n-1) + 1/n.
> >>
> >> For which n do we have f(n-2) > f(n-1) > f(n)?
> >>
> >
> >    I get
> >
> >    3 6 13 34 91 264 783 2342 7013 21030 63079 189236 567709 1703124
> >    5109367 15328088 45984249
> >
> >    Since odds and evens alternate, I conclude that no term is triple
> >    the previous.
> >
> > --
> > Don Reble  djr at nk.ca
> >
> >
> >
> > _______________________________________________
> >
> > Seqfan Mailing list - http://list.seqfan.eu/
> >
>
>
>
> --
> Dear Friends, I have now retired from AT&T. New coordinates:
>
> Neil J. A. Sloane, President, OEIS Foundation
> 11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
> Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway,
NJ.
> Email: njasloane at gmail.com
>
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>
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