[seqfan] Re: Two easy sequences not in the OEIS

[Neil Sloane]

But what IS the definition? How does it differ from A051885?
Neil


On Sun, Jan 12, 2014 at 2:31 PM, M. F. Hasler <oeis at hasler.fr> wrote:

> The definition of that sequence is different.
> Nice idea, I think it should be submitted.
> M.
>
>
> On Sun, Jan 12, 2014 at 12:07 PM, Alonso Del Arte
> <alonso.delarte at gmail.com>wrote:
>
> > A lot of times, when I'm surprised a sequence is not already in the
> OEIS, I
> > try a slightly different definition and find that one is in the OEIS.
> > Whether the first definition I tried is worth adding, that's something to
> > be decided on a case by case basis.
> >
> > 051885 <http://oeis.org/A051885>
> > Smallest number whose sum of digits is n.
> >
> > Al
> >
> >
> >
> > On Sun, Jan 12, 2014 at 9:18 AM, John W. Nicholson
> > <reddwarf2956 at yahoo.com>wrote:
> >
> > > Those are not the only ones which the sum of digits of a(n) = n,
> > >
> > > Let a(4) = 112 and 211
> > >
> > > will also work. Unless you are meaning that the sequence is only
> > > increasing?
> > >
> > > Maybe you are meaning these are the min and max sequence that you want
> > > while the sequence is increasing?
> > >
> > >
> > >
> > >
> > > John W. Nicholson
> > >
> > >
> > >
> > > On Sunday, January 12, 2014 6:04 AM, Jeremy Gardiner <
> > > jeremy.gardiner at btinternet.com> wrote:
> > >
> > >
> > > >I was surprised not to find these sequences in the OEIS:
> > > >
> > > >1, 11, 12, 121, 122, 123, 1231, 1232, 1233, 1234, 12341, 12342, 12343,
> > > >12344, 12345, ...
> > > >
> > > >1, 11, 21, 121, 221, 321, 1321, 2321, 3321, 4321, 14321, 24321, 34321,
> > > >44321, 54321, ...
> > > >
> > > >In each case, the sum of digits of a(n) = n.
> > > >
> > > >These might be extended beyond 123456789 and 987654321 as follows:
> > > >
> > > >1987654321, 11987654321, 21987654321, 121987654321, 221987654321,
> > > >321987654321, ...
> > > >
> > > >I'll be happy to submit these, if anyone thinks they are interesting?
> > > >
> > > >Further, summing the digits of terms of both sequences:
> > > >
> > > >2, 22, 33, 242, 343, 444, 2552, 3553, 4554, 5555, 26662, 36663, 46664,
> > > >56665, 66666, ...
> > > >
> > > >Sum of digits of a(n) = 2, 4, 6, 8, 10, 12, ...
> > > >
> > > >However there is a difficulty extending this sequence beyond
> > > >12345678, 87654321 => 99999999
> > > >
> > > >Any suggestions?
> > > >
> > > >Jeremy
> > > >
> > > >
> > > >
> > > >_______________________________________________
> > > >
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> > > >
> > > >
> > > >
> > >
> > > _______________________________________________
> > >
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> > >
> >
> >
> >
> > --
> > Alonso del Arte
> > Author at SmashWords.com<
> > https://www.smashwords.com/profile/view/AlonsoDelarte>
> > Musician at ReverbNation.com <http://www.reverbnation.com/alonsodelarte>
> >
> > _______________________________________________
> >
> > Seqfan Mailing list - http://list.seqfan.eu/
> >
>
>
>
> --
> Maximilian
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
>



-- 
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.
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