[seqfan] Re: A073615

Neil Sloane njasloane at gmail.com
Thu Feb 6 14:11:43 CET 2014


Don, Thanks! I've updated A073615.


On Thu, Feb 6, 2014 at 7:45 AM, Don Reble <djr at nk.ca> wrote:

> [A073615] could use some more terms (probably from a trivial modification
>> of your program, Don?)...
>>
>
>    Ok.
>
>    5,11,13,101,223,1277,1279,1616603,3772637849,51448351,
>    115438255651987,1007002660975121,433241801791933
>
>
>    Everything looks good in those two sequences, except maybe
>
>  %t A236411 This program generates the first ten terms of the sequence.
>>    To generate more would require significantly greater computing
>>    resources...
>>
>
>    All you need is a sieving technique. BitTwiddler, here, is an
>    ordinary desk computer. But the sieve hastens by a factor of 140000,
>    and he pops out that that eleventh term (a(12), actually) in
>    1.6 seconds.
>
> --
> Don Reble  djr at nk.ca
>
>
>
> _______________________________________________
>
> 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
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


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