[seqfan] Re: submitting sequences with sets as terms

Bob Selcoe rselcoe at entouchonline.net
Mon Mar 23 13:14:21 CET 2015


Hi Neil and Seqfans,

I do now see a link: clear-cut examples of keywords on the Style Sheet under "Keywords".  Perhaps it was there before and I missed it (or maybe Alonso added it?).

Regardless, I was thinking a lot of the information there also belongs under the "Format of Entries in OEIS / Data" heading.  

Unless there are objections, as time permits, I'll add the info from this thread and some of the info under "clear cut examples of keywords" to the "Data" section; or at least add the link and a brief explanation as to what kinds of info there applies to Data.

Best,
Bob

--------------------------------------------------
From: "Neil Sloane" <njasloane at gmail.com>
Sent: Sunday, March 22, 2015 12:58 PM
To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: submitting sequences with sets as terms

> Bob or Alonso, Could you take care of this (excellent) suggestion:
> 
> Neil, this may be best addressed by you - Although the answer was on the
> "Keyword" page, I wouldn't have thought to look there (and I'm not even
> sure where it is; When I click on "Wiki" or "Index", I don't see anything
> like "keywords", let alone "Clear-cut_examples_of_keywords" under Wiki,
> which is where Alonso's link directs).
> 
> Might I suggest including answers to this question, and perhaps other
> related questions, on the "Style Sheet" wiki page?  That seems like an
> appropriate place to look for such answers.
> 
> (I am a little busy right now)
> 
> Thanks
> 
> 
> 
> 
> 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 Sun, Mar 22, 2015 at 12:36 PM, Bob Selcoe <rselcoe at entouchonline.net>
> wrote:
> 
>> Thanks, Alonso and Neil!
>>
>> I will use "tabf" for this sequence.
>>
>> Neil, this may be best addressed by you - Although the answer was on the
>> "Keyword" page, I wouldn't have thought to look there (and I'm not even
>> sure where it is; When I click on "Wiki" or "Index", I don't see anything
>> like "keywords", let alone "Clear-cut_examples_of_keywords" under Wiki,
>> which is where Alonso's link directs).
>>
>> Might I suggest including answers to this question, and perhaps other
>> related questions, on the "Style Sheet" wiki page?  That seems like an
>> appropriate place to look for such answers.
>>
>> Thanks,
>> Bob
>>
>> --------------------------------------------------
>> From: "Neil Sloane" <njasloane at gmail.com>
>> Sent: Sunday, March 22, 2015 10:48 AM
>> To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
>> Subject: [seqfan] Re: submitting sequences with sets as terms
>>
>>
>>  Bob,
>>> Alonso already answered your question, but here are some further remarks:
>>>
>>> There are 4 standard ways to do that:
>>>
>>> 1.  Sequence giving smallest prime divisor of a(n).
>>>
>>> 2.  Sequence giving largest prime divisor of a(n).
>>>
>>> 3.  Sequence listing the distinct primes dividing a(n), in increasing
>>> order, as an irregular triangle, with keyword tabf, as in Alonso's reply.
>>> In this case that would be
>>> 2, 3, 2,3, 2, 3,5, ...
>>>
>>> 4. Sequence listing all primes dividing a(n), with repetition, in
>>> increasing order, as an irregular triangle, with keyword tabf, as in
>>> Alonso's reply. In this case that would be
>>> 2,3,2,2,3,3,2,2,2,3,5,...
>>>
>>>
>>>
>>> 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 Sat, Mar 21, 2015 at 3:26 PM, Bob Selcoe <rselcoe at entouchonline.net>
>>> wrote:
>>>
>>>
>>>> Hi Seqfans,
>>>>
>>>> I was hoping for some clarification about submitting sequences with sets
>>>> as terms.
>>>>
>>>> For instance, the sequence of prime factors of A098550(n) n>1 is  {2},
>>>> {3}
>>>> {2}, {3}, {2}, {3,5}, {2,7}, {5}, {2,3}...
>>>>
>>>> Is there a preferred format for such sequences?
>>>>
>>>> Thanks in advance,
>>>> Bob Selcoe
>>>> PS - is there a page on the site which addresses this? I couldn't find it
>>>> from the OEIS Wiki page.
>>>>
>>>> _______________________________________________
>>>>
>>>> Seqfan Mailing list - http://list.seqfan.eu/
>>>>
>>>>
>>> _______________________________________________
>>>
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>>
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