[seqfan] Re: Sister sequences
Neil Sloane
njasloane at gmail.com
Sun Nov 24 21:53:55 CET 2013
Reinhard - thanks, nice work.
I added A232359 and A232361 to the cross-refs line in A232221 - I believe
that any sequence mentioned in the entry should also be listed in the
CROSSREFS line.
This is helpful, even essential, when searching
for sequences that mention a given sequence.
About the "graph" for A232361, it sems to show negative values. Is this a
bug?
Neil
On Sun, Nov 24, 2013 at 3:39 PM, Reinhard Zumkeller <
reinhard.zumkeller at gmail.com> wrote:
> I just added A232361 and A232359 for peak values in A232221.
> Best regards
> Reinhard
>
>
> 2013/11/24 Veikko Pohjola <veikko at nordem.fi>
>
> > The mutual behavior of these sisters becomes easier to assess by
> > examining, instead of the difference, what happens to the ratio, which of
> > course is no more an integer sequence. It appears (appears) to approach a
> > limit.
> > Veikko
> >
> > Hans Havermann kirjoitti 24.11.2013 kello 4.20:
> >
> > > Veikko Pohjola:
> > >
> > >> The first 400 or so terms would make one expect a steady growth but at
> > n=425, the curve, at value 590868, starts a dive to make a short visit
> > below zero at n=941 and then starts to grow again. This time it stays
> > positive positive up to about n=13000 and then dives really deep to the
> > negative, and that trend continues far beyond n=200000...
> > >
> > > One has to smile because that "really deep" becomes *really shallow* in
> > the larger context. :)
> > >
> > > http://chesswanks.com/num/A232221-2.png
> > >
> > >
> > > _______________________________________________
> > >
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> > >
> >
> >
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> >
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> >
>
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>
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--
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.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com
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