[seqfan] Re: less?

[Neil Sloane]

I agree with Sean.  go ahead and submit it.  of course there is a simple
formula, but still, we should have it
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 Tue, Dec 17, 2019 at 2:26 AM Sean A. Irvine <sairvin at gmail.com> wrote:

> Yes please add this,  I too am surprised that it is not already present.
>
>
> On Tue, 17 Dec 2019 at 20:09, jnthn stdhr <jstdhr at gmail.com> wrote:
>
> > Hi all.
> >
> > If I haven't made some tremendously boneheaded mistake, I'm a bit
> surprised
> > this sequence isn't in the db, so I can't decide if it should be added,
> or
> > if it's an example of one deserving of the keyword less.
> >
> > a(n) is the sum of the even positive integers less than or equal to n
> times
> > the sum of the odd positive integers less than or equal to n.
> >
> > Assuming the null set has a value of zero, this is:
> >
> > 0,0,2,8,24,54,108,192,...
> >
> > Many sequences are related, of course.  Superseeker doesn't find this
> exact
> > sequence, but lists many transformations that match.
> >
> > -First differences for n>=2,  = A5996.
> >
> > -For even n, a(n) = A179824.
> >
> > -For odd n, a(n) = A085537.
> >
> > -a(n)/2 = A007009.
> >
> > And more.
> >
> > Should I add this?
> >
> > P.S.
> > This is the number of crossings if one draws n parallel lines
> perpendicular
> > to the previous number of lines.
> >
> > --
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> >
>
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