[seqfan] Re: A025586/2

[P. Michael Hutchins]

Thank you, Jean-Paul.

Your comment led me to look more closely at the initial terms of  A025586
and  A056959, which revealed the following surprise:

The values of A025586 are listed as beginning with a 1, whereas I make it
4.  I don't see where the 1 came from.

Similarly, "essentially the same" sequence, A056959 is said to start off
"4,4}, which I would say should be "4,2".  I don't see where A056959(2)=4
comes from.

Moreover, although "A025586/2" is integral for all n - it's also  divisible
by 4 for n>=3.
So should the new sequence be A025586/4, n>=3 instead ofA025586/2, n>=1?

On Mon, Oct 14, 2019 at 1:53 AM jean-paul allouche <
jean-paul.allouche at imj-prg.fr> wrote:

> (Note that the first term of A025586 is not even)
> jpa
>
> Le 14/10/2019 à 07:38, Neil Sloane a écrit :
> >> Is that enough to make a new sequence?
> >
> > Not necessarily, but for this sequence I say Yes!
> >
> > 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 Mon, Oct 14, 2019 at 12:51 AM P. Michael Hutchins <pmh232 at gmail.com>
> > wrote:
> >
> >> Every item in  A025586 <https://oeis.org/A025586> is even.  So we can
> >> factor out the 2s.  My feeling is that such produces a "purer" sequence
> -
> >> one that's more likely to be matched from some other domain.
> >>
> >> Is that enough to make a new sequence?
> >>
> >> --
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> >>
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>
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