[seqfan] Re: Number of real roots of polynomial with coefficients +-1, or 0, +-1

[Neil Sloane]

Peter Munn, you are suggesting the max no of real roots for a poly of
degree n and coeffts 0 or +-1, with the first and last coeffts nonzero,
right?
That wasn't our original intention, but it would make a very reasonable
companion to A282691 and A282692.  If you - or someone else - can send me
the initial terms I will create the entry.  Or you could do it yourself.
Thanks.


Best regards
Neil

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


On Fri, Feb 24, 2017 at 2:18 PM, Peter Munn <techsubs at pearceneptune.co.uk>
wrote:

> It appears I sent the below message just before the named sequence was
> deleted and recycled.  My comment was to suggest changing the sequence
> definition - the result might even have been the author's intended
> definition.  I think it would create a worthwhile variation on A282692,
> whereas the sole added requirement of c_n != 0 seems not to have done.
>
> Peter Munn
>
> > Should A282693 specify also that c_0 != 0?
> >
> > Peter Munn
> >
> >> https://oeis.org/A282691, A282692, A282693 all need more terms!
> >>
> >> --
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> >>
> >
> >
> >
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