[seqfan] Re: M- and N-numbers

Olivier Gerard olivier.gerard at gmail.com
Sun Jun 10 13:43:15 CEST 2012


Thanks a lot for finding these discrepancies !

Concerning   M001, the second result is


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.


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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