[seqfan] Re: A marginal observation on some tables of R. H. Hardin

Neil Sloane njasloane at gmail.com
Wed Feb 11 23:55:25 CET 2015


Good point, about discouraging human readers.

How about something like this? The machine-generated
cross-references could say:

Cf. (generated automatically): A234111, A234112, ...

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 Wed, Feb 11, 2015 at 5:05 PM, Ron Hardin <rhhardin at att.net> wrote:

> It's easy to add the %Y lines (done!) to the generating programs but it
> changes how you look at the line if it's an index of mentions above rather
> than something you might want to look at as decided by a human.  Either way
> is okay.  It just changes the use.
>
> The count-against is that you lose the human editor, and so may skip them
> all because so many are useless.
>
>
> rhhardin at mindspring.com
> rhhardin at att.net (either)
>
>
> >________________________________
> > From: Neil Sloane <njasloane at gmail.com>
> >To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> >Sent: Wednesday, February 11, 2015 3:35 PM
> >Subject: [seqfan] Re: A marginal observation on some tables of R. H.
> Hardin
> >
> >
> >I cannot understand why there is ever an objection to
> >cross-references.
> >
> >If you are using the OEIS for
> >what it chiefly intended for, its main purpose, which is to help
> >you (very often, me) understand a sequence that has come
> >up in your work, then any hint at all is potentially valuable.
> >
> >A cross-reference is like someone whispering to you, "I don't know if it
> >will help, but did you look at A...... ? "
> >
> >And they should all be listed in the cross-reference section,
> >so it is easy to find them.
> >
> >
> >
> >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 Wed, Feb 11, 2015 at 2:56 PM, Frank Adams-Watters <
> franktaw at netscape.net>
> >wrote:
> >
> >> Just as a point of reference, a search for "A000217 -xref:A000217" gives
> >> 933 matches, out of 2699 that match "A000217".
> >>
> >> Franklin T. Adams-Watters
> >>
> >> -----Original Message-----
> >> From: Neil Sloane <njasloane at gmail.com>
> >> To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> >> Sent: Wed, Feb 11, 2015 1:41 pm
> >> Subject: [seqfan] Re: A marginal observation on some tables of R. H.
> Hardin
> >>
> >>
> >>  I forget.  But the main reason is for humans to be able to see at a
> glance
> >> what sequences are mentioned.
> >>
> >> 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 Wed, Feb 11, 2015 at 2:15 PM, Charles Greathouse <
> >> charles.greathouse at case.edu> wrote:
> >>
> >>  What part of Russ' code work improperly when a sequence is in an
> >>>
> >> entry but
> >>
> >>> not the xref field?
> >>>
> >>> Charles Greathouse
> >>> Analyst/Programmer
> >>> Case Western Reserve University
> >>>
> >>> On Wed, Feb 11, 2015 at 11:23 AM, Neil Sloane <njasloane at gmail.com>
> >>>
> >> wrote:
> >>
> >>>
> >>> > Just to clarify one point:
> >>> >
> >>> > The rule is that if there is a line anywhere in the entry that
> >>> > mentions A123456, then Cf. A123456 should also appear in the
> >>> > cross-references section.
> >>> >
> >>> > (there are two good reasons: so Russ's code works
> >>> > properly, and so the user can easily see if A123456 is
> >>> > referred to anywhere in the entry without having to search through
> >>>
> >> every
> >>
> >>> > line)
> >>> >
> >>> > 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 Wed, Feb 11, 2015 at 7:34 AM, Ron Hardin <rhhardin at att.net>
> >>>
> >> wrote:
> >>
> >>> >
> >>> > > I agree than any specific case can benefit from two-way links,
> >>>
> >> but not
> >>
> >>> in
> >>> > > general.  At least it seems that way to me.
> >>> > >
> >>> > >
> >>> > > I don't understand the first paragraph problem you describe below.
> >>> > > Clicking "refs" in the header of the table gives you a nice page
> >>>
> >> with
> >>
> >>> all
> >>> > > the rows and columns and diagonals expanded for you, as well as
> >>>
> >> any
> >>
> >>> > foreign
> >>> > > sequence that happens to reference inwards.
> >>> > >
> >>> > >
> >>> > > rhhardin at mindspring.com
> >>> > > rhhardin at att.net (either)
> >>> > >
> >>> > >
> >>> > > >________________________________
> >>> > > > From: M. F. Hasler <seqfan at hasler.fr>
> >>> > > >To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> >>> > > >Sent: Wednesday, February 11, 2015 7:23 AM
> >>> > > >Subject: [seqfan] Re: A marginal observation on some tables of
> >>>
> >> R. H.
> >>
> >>> > > Hardin
> >>> > > >
> >>> > > >
> >>> > > >Ron,
> >>> > > >
> >>> > > >I am also personally against duplicating links (really never
> >>> > > >understood why an A-number put somewhere in comment or formula
> >>>
> >> should
> >>
> >>> > > >be repeated in Xrefs), but it is nonetheless handy to have the
> >>>
> >> links
> >>
> >>> > > >to the column sequences because else you have to do a search
> >>>
> >> with only
> >>
> >>> > > >the sequence number in order to find them via the backlink, but
> >>>
> >> often
> >>
> >>> > > >you come there following a link and not doing a search (and it is
> >>> > > >somehow counter-intuitive to copy-paste the number of the
> >>>
> >> sequence
> >>
> >>> > > >already displayed on the screen again into the search box...).
> >>> > > >
> >>> > > >Also, in the present case there was no link to the tables
> >>>
> >> A250676 and
> >>
> >>> > > >A250691 with almost identical definition, and they would not pop
> >>>
> >> up
> >>
> >>> > > >doing a search for the other sequence numbers.
> >>> > > >
> >>> > > >I also agree on the "significance" issue, and it is painfully to
> >>>
> >> have
> >>
> >>> > > >a bunch of sequence numbers in the Xrefs without knowing why
> >>>
> >> they are
> >>
> >>> > > >there. But with 2-3 words of explanation or just hints, this is
> >>>
> >> a true
> >>
> >>> > > >added value, I think.
> >>> > > >
> >>> > > >Maximilian
> >>> > > >
> >>> > > >
> >>> > > >On Wed, Feb 11, 2015 at 8:05 AM, Ron Hardin <rhhardin at att.net>
> >>>
> >> wrote:
> >>
> >>> > > >> The row/col/diag series always link to the table, so the refs
> >>>
> >> link
> >>
> >>> in
> >>> > > the table will find them.
> >>> > > >>
> >>> > > >> It always seemed like needless clutter to link the other way
> >>> without a
> >>> > > reason beyond existence.  It seems to claim significance beyond
> >>>
> >> that.
> >>
> >>> > > >>
> >>> > > >> The inbound links by contrast say that there are more like
> >>>
> >> this, in
> >>
> >>> > > this family.
> >>> > > >>
> >>> > > >>
> >>> > > >> rhhardin at mindspring.com
> >>> > > >> rhhardin at att.net (either)
> >>> > > >>
> >>> > > >>
> >>> > > >>>________________________________
> >>> > > >>> From: M. F. Hasler <seqfan at hasler.fr>
> >>> > > >>>To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> >>> > > >>>Sent: Wednesday, February 11, 2015 6:48 AM
> >>> > > >>>Subject: [seqfan] Re: A marginal observation on some tables of
> >>>
> >> R. H.
> >>
> >>> > > Hardin
> >>> > > >>>
> >>> > > >>>
> >>> > > >>>I added your comment in A250544, and also several missing
> >>> > > >>>cross-references to sequences which list the rows/cols.
> >>> > > >>>It would be nice if others could edit related sequences in a
> >>>
> >> similar
> >>
> >>> > > manner.
> >>> > > >>>
> >>> > > >>>Maximilian
> >>> > > >>>
> >>> > > >>>
> >>> > > >>
> >>> > > >> _______________________________________________
> >>> > > >>
> >>> > > >> Seqfan Mailing list - http://list.seqfan.eu/
> >
> >
> >
> >
> >>> > > >
> >>> > > >
> >>> > > >
> >>> > > >
> >>> > > >
> >>> > > >_______________________________________________
> >>> > > >
> >>> > > >Seqfan Mailing list - http://list.seqfan.eu/
> >>> > > >
> >>> > > >
> >>> > > >
> >>> > >
> >>> > > _______________________________________________
> >>> > >
> >>> > > Seqfan Mailing list - http://list.seqfan.eu/
> >>> > >
> >>> >
> >>> > _______________________________________________
> >>> >
> >>> > Seqfan Mailing list - http://list.seqfan.eu/
> >>> >
> >>>
> >>> _______________________________________________
> >>>
> >>> Seqfan Mailing list - http://list.seqfan.eu/
> >>>
> >>>
> >> _______________________________________________
> >>
> >> Seqfan Mailing list - http://list.seqfan.eu/
> >>
> >>
> >>
> >> _______________________________________________
> >>
> >> Seqfan Mailing list - http://list.seqfan.eu/
> >>
> >
> >_______________________________________________
> >
> >Seqfan Mailing list - http://list.seqfan.eu/
> >
> >
> >
>
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