[seqfan] Re: A summer seq with second differences

[Eric Angelini]

Many thanks, Neil !


-----Message d'origine-----
De : SeqFan [mailto:seqfan-bounces at list.seqfan.eu] De la part de Neil Sloane
Envoyé : mercredi 31 juillet 2013 14:49
À : Sequence Fanatics Discussion list
Objet : [seqfan] Re: A summer seq with second differences

Eric, nice sequence, as always! I added it as A226930.
I also added your comment to A164073.
Neil


On Tue, Jul 30, 2013 at 3:26 AM, Eric Angelini <Eric.Angelini at kntv.be>wrote:

> Many thanks, Paolo!
> And such sequences can be computed
> ad libitum for 3rd, 4th, 5th, ... nth differences, of course.
>
> BTW could you add this comment
> to A164073 (as I have no access to it):
> "Absolute second differences are the
> sequence itself"
> (this might be suggested by the other
> comments but is not obvious to me).
>
> Best,
> É.
>
> Propulsé d'un aPhone
>
>
>
> Le 30 juil. 2013 à 09:13, "Paolo Lava" <paoloplava at gmail.com> a écrit :
>
> > It should start as:
> >
> > 1, 2, 4, 8,16, 32, 49, 72, 98, 126, 158, 199, 247, 297, 356, 423, 491,
> 561,
> > 637, 714, 796, 886, 977, 1077, 1186, 1297, 1412, 1534, 1658, 1791, 1931,
> > 2074, 2222, 2376, 2534, 2694, 2857, 3024, 3200, 3377, 3559, 3747, 3936...
> >
> >
> > 2013/7/29 Eric Angelini <Eric.Angelini at kntv.be>
> >
> >>
> >> Hello SeqFans,
> >>
> >> S=1,2,4,8,16,32,49,72,98,126,158,199,247,297,352,423,...
> >> Compute the second differences and... look who's coming back!
> >>
> >> Best,
> >> É.
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >>
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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
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com

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