[seqfan] Re: M- and N-numbers

[Neil Sloane]

Thanks for noticing those discrepancies. The duplicate M0001 was certainly
an error in the OEIS and it is good that this has been corrected.

As for other missing or duplicated N- and M- numbers, these were deliberate
actions on my part, to correct errors in those two books. Some of
the errors were my fault, but not many! Most were caused by errors
in the published literature.

Neil

On Sun, Jun 10, 2012 at 7:43 AM, Olivier Gerard <olivier.gerard at gmail.com>wrote:

> Charles,
>
> Thanks a lot for finding these discrepancies !
>
> Concerning   M001, the second result is
>
> https://oeis.org/A189849/internal
>
> which is marked as formerly M001.  This is not possible
> for this sequence was created in 2011 !
>
> Looking at the deep history, it shows that this was
> entered manually by the author, Stewart Herring.
> It should be edited. I will do it now.
>
>
> For the next case signaled by Charles, the trouble was
> already in the EIS :
>
> A000521  and A007240  both point to N2372 in it, but that's
> normal because they just differ by one element and refer
> to the same underlying objects.  The reference to the Handbook
> was later split in the Encyclopedia.
>
>
> Olivier
>
>
>
> On Sun, Jun 10, 2012 at 1:22 PM, Matthew Vandermast
> <ghodges14 at comcast.net>wrote:
>
> > Interesting. For what it's worth, my EIS (now falling apart!) does indeed
> > list only one M0001, the sequence that is now best known as A000035 (
> > https://oeis.org/A000035)
> >
> > Regards,
> > Matt Vandermast
> >
> > ----- Original Message -----
> > From: Charles Greathouse <charles.greathouse at case.edu>
> > To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> > Sent: Sun, 10 Jun 2012 06:30:06 -0000 (UTC)
> > Subject: [seqfan] M- and N-numbers
> >
> > Sequences published in the HIS or EIS have N- or M-numbers in addition
> > to their (absolute) A-numbers.  While looking into these numbers
> > yesterday I saw that some numbers do not appear and others are
> > duplicated:
> > id:M0001
> > id:N2372
> > id:N2353
> > id:N2345
> > etc.
> >
> > What's going on?
> >
> > Charles Greathouse
> > Analyst/Programmer
> > Case Western Reserve University
> >
> > _______________________________________________
> >
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> >
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> >
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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