[seqfan] Re: defn of A179920 primes with only one embedded prime

Robert G. Wilson v rgwv at rgwv.com
Wed Aug 4 00:15:40 CEST 2010


Should be Primes with no embedded primes. I'll change it.

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From: "zak seidov" <zakseidov at yahoo.com>
Sent: Tuesday, August 03, 2010 3:55 PM
To: <seqfan at seqfan.eu>
Subject: [seqfan] Re: defn of A179920 primes with only one embedded prime

> Me too think that
> these are just duplicates
> (the common thing when submitting bunch of sequences ;))
>
> Zak
>
> --- On Tue, 8/3/10, Richard Mathar <mathar at strw.leidenuniv.nl> wrote:
>
>> From: Richard Mathar <mathar at strw.leidenuniv.nl>
>> Subject: [seqfan]  defn of A179920 primes with only one embedded prime
>> To: seqfan at seqfan.eu
>> Date: Tuesday, August 3, 2010, 3:44 PM
>>
>> What is the essence of the difference between these two:
>> http://oeis.org/classic/?q=id:A179920|id:A033274
>> 2,3,5,7,11,19,41,61,89,101,109,149,181,401,409,449,491,499,601,691,809,881,991,1009,1049,1069,1481,1609,1669,1699,1801,4001,4049,4481,4649,4801,4909,4969,6091,6469,6481,6869,6949,8009,8069,8081,8609,8669,8681,
>>
>> 2,3,5,7,11,19,41,61,89,101,109,149,181,401,409,449,491,499,601,691,809,881,991,1009,1049,1069,1481,1609,1669,1699,1801,4001,4049,4481,4649,4801,4909,4969,6091,6469,6481,6869,6949,8009,8069,8081,8609,8669,8681,
>>
>> Because A179920 contains a cross-reference to A033274, this
>> does not seem
>> to be just another duplicate, but I cannot figure out from
>> the definitions
>> at which place the two sequences would differ.
>>
>> RJM
>>
>>
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