[seqfan] Re: Quadratics in the OEIS
Charles Greathouse
charles.greathouse at case.edu
Tue Aug 31 15:35:55 CEST 2010
I hadn't noticed that, Richard. Does anyone else have thoughts about
eventually-recurrent sequences? I had planned to put them in some
category paralleling
http://oeis.org/wiki/Category:Eventually_periodic
which I created for this sort of purpose, but maybe they should all be combined.
Arguments for combining:
* That's how we're doing it now -- or at least how Richard is doing it now
* There aren't too many sequences like this: no need for a hierarchy
with just a few members
Arguments against combining:
* The basic relation a(n) = An^2 + Bn + C is lost -- you can no longer
expect that just because a sequence is in the category you can
calculate terms from any three
Similarly, what about other eventually-foo sequences? nonn?
Charles Greathouse
Analyst/Programmer
Case Western Reserve University
On Tue, Aug 31, 2010 at 8:30 AM, Richard Mathar
<mathar at strw.leidenuniv.nl> wrote:
>
> http://list.seqfan.eu/pipermail/seqfan/2010-August/005884.html
>
> cg> those separately) I removed the sequences I found that weren't right,
> cg> to wit: A050267, A094914, A105340, A107973, A115535, A132337, A158865,
> cg> A168028. More details are on the page itself.
>
> Note that A094914 is in the recLCC index because it obeys a polynomial
> definition *after*omitting*a*finite*number*of*initial*terms.
> This strict definition applies to all sequences that I've gathered in the
> index.
>
> Richard Mathar
>
>
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