[seqfan] Re: A077800: Broken links(?)

[Felix Fröhlich]

Dear all

Having been part of efforts (read: discussions) at Wikipedia to establish a
system to archive links used as references in articles I agree that
establishing a system to systematically archive links is an enormous task.
I guess this is something that could be done via a script that scans all
OEIS sequence pages and automatically submits them to an archiving service
like Internet Archive (maybe an automated bot doing this at periodic
intervals). This is presuming the Internet Archive allows such automatic
submissions (I am not sure of that). Maybe an official representative of
the OEIS Foundation could approach them about it. Apart from that think
that of the different existing on-demand archiving services like WebCite or
archive.is, Internet Archive might be the most reliable service.

Best regards
Felix

2015-04-30 17:53 GMT+02:00 jean-paul allouche <jean-paul.allouche at imj-prg.fr
>:

> Dear Neil
>
> Thank you!
>
> I agree that cached copies should well be done systematically,
> but what a huge job...
>
> For J.-P. Delahaye, his email seeems to be jean-paul.delahaye  at
> univ-lille1.fr
>
> all the best
> jean-paul
>
> Le 30/04/15 16:29, Neil Sloane a écrit :
>
>  Zak, Jean-Paul,
>> Thanks for that detective work!
>>
>> These links appear in 3 sequences: A077800 A099609 A001097
>>
>> The Evard file:  Zak made a link to the Wayback Machine (nice!), I made a
>> cached copy of the html file, also a pdf file as a backup.  So now there
>> are 3 links to this paper, in 3 sequences
>>
>> Delahaye: I changed the link to point to the web site of Pour la science.
>> I did not make a cached copy, although I would like to. Should I?
>>
>> What do they say - 30% of links die each year?  We need to
>> make a lot more cached copies of our links.  This could be a full-time
>> job,
>> like painting the Golden Gate Bridge.
>>
>> Of course it is better to make cached copies BEFORE the link dies
>> - that way we can ask permission first.
>>
>> Does anyone have a current email address for M. Delahaye?
>>
>>
>> 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, Apr 30, 2015 at 5:54 AM, jean-paul allouche <
>> jean-paul.allouche at imj-prg.fr> wrote:
>>
>>  Hi
>>>
>>> The first link is now
>>> http://www.lifl.fr/~delahaye/SIME/JPD/PLS_Nb_premiers_jumeaux.pdf
>>>
>>> As for the second one it is available through
>>>
>>>
>>> http://web.archive.org/web/20110726012847/http://www.math.utoledo.edu/~jevard/Page012.htm
>>> (links seem to work, but it would be good to make a local copy of the
>>> whole thing for the OEIS,
>>> unfortunately I do not have the time to do that)
>>>
>>> best wishes
>>> jean-paul
>>>
>>> Le 29/04/15 18:35, Zak Seidov a écrit :
>>>
>>>     Broken links in A077800(?):
>>>
>>>> J. P. Delahaye, Twin Primes:Enemy Brothers?
>>>>
>>>> J. C. Evard, Twin primes and their applications.
>>>>
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