[seqfan] Re: A002094 from 1875 needs more terms

Neil Sloane njasloane at gmail.com
Thu Mar 22 15:11:01 CET 2018


Peter, That's a good point!  I just added the original definition from the
1973 "Handbook".

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 Thu, Mar 22, 2018 at 5:16 AM, Peter Munn <techsubs at pearceneptune.co.uk>
wrote:

> Is it possible, though, for someone who understands it to add a comment
> about the sequence's origins and how Schiff saw it? Reading A002094 now,
> it is mathematically much improved, but feels a little divorced from its
> history, and thereby seems to have lost something.
>
> Best Regards,
>
> Peter
>
> On Sat, March 17, 2018 5:08 pm, Hugo Pfoertner wrote:
> > The German in Schiff's article is difficult to understand, but it is my
> impression that at the time of writing the meaning of "alcohol radical"
> was different from the modern use, where it means an "-OH" attached to a
> hydrocarbon.
> > https://www.britannica.com/science/alcohol/Structure-and-
> classification-of-alcohols
> > So perhaps the name of the sequence should be adapted to modern chemical
> terminology and "alcohol" be dropped. The title of Richard's
> illustrations
> > might be a candidate for a less misleading sequence title.
>
> > Schiff 's Hydrocarbons with a Single Ring
>
> > Hugo Pfoertner
>
> > On Sat, Mar 17, 2018 at 5:44 PM, Richard J. Mathar
> <mathar at mpia-hd.mpg.de> wrote:
> >>
> >> In response to http://list.seqfan.eu/pipermail/seqfan/2018-March/
> 018463.html :
> >> As an appetizer I added illustrations for the first few terms
> >> (as far as I understand the compositions) to http://oeis.org/A002094 .
> >>
> >> RJM
>
>
>
>
>
>
> --
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>


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