[seqfan] Re: A158714

Neil Sloane njasloane at gmail.com
Sat May 10 04:26:52 CEST 2014


Robert, what we normally do is to
change the definition to fit the sequence,
taking the point of view that the numbers have
higher priority than the words - but then
add the companion sequence as a new entry,
and add cross-references between the pair of sequences (could you
perhaps do that?)
Best regards
Neil


On Fri, May 9, 2014 at 1:53 PM, <israel at math.ubc.ca> wrote:

> Title is A158714 Primes p such that p1=Ceiling[p/2]+p is prime and
> p2=Floor[p1/2]+p is prime. The data given match not this, but rather Primes
> p such that p1=Ceiling[p/2]+p is prime and p2=Floor[p1/2]+p1 is prime.
>
> For example, A158714 is given as 19.
> ceil(19/2) + 19 = 29 is prime.
> floor(29/2) + 19 = 33 is composite, but floor(29/2) + 29 = 43 is prime.
>
> So: change the definition to match the data, or the data to match the
> definition?
>
> Robert Israel
> University of British Columbia and D-Wave Systems
>
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>
> Seqfan Mailing list - http://list.seqfan.eu/
>



-- 
Dear Friends, I have now retired from AT&T. New coordinates:

Neil J. A. Sloane, President, OEIS Foundation
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