[seqfan] Re: Primes with n prime substrings

Charles Greathouse charles.greathouse at case.edu
Wed Apr 7 14:52:55 CEST 2010


I misread the sequence as "at least 4 primes".

Charles Greathouse
Analyst/Programmer
Case Western Reserve University

On Wed, Apr 7, 2010 at 8:50 AM, Robert G. Wilson v <rgwv at rgwv.com> wrote:
> Charles,
>
>    Where is the 7 in a(4)? That's why a(n)=2357.
>
> Bob.
>
> --------------------------------------------------
> From: "Charles Greathouse" <charles.greathouse at case.edu>
> Sent: Wednesday, April 07, 2010 7:59 AM
> To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
> Subject: [seqfan] Re: Primes with n prime substrings
>
>> Why 2,23,523,2357 and not 2,23,523,523?
>>
>> Charles Greathouse
>> Analyst/Programmer
>> Case Western Reserve University
>>
>> On Wed, Apr 7, 2010 at 4:11 AM, zak seidov <zakseidov at yahoo.com> wrote:
>>> 2,23,523,2357,112573,511327,1135217,1113251719,11171323519,11113171952329,...
>>>
>>> a(n) = the smallest prime with at least n first primes as its substrings.
>>>
>>> Anyone may wish to check/extend/edit/submit this?
>>>
>>> Zak
>>>
>>>
>>>
>>>
>>>
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>>
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