[seqfan] Re: Definition of A023200

Klaus Brockhaus klaus-brockhaus at t-online.de
Fri Mar 5 08:39:48 CET 2010

I categorically vote for restoring the original definition, unless David 
Wilson, the author of A023200, decides differently. Whatever is done, 
restitution or change, should be documented in an *additional* extension 


Charles Greathouse schrieb:
> I prefer
> %N A023200 Primes p such that p+4 is prime.
> On Thu, Mar 4, 2010 at 9:14 PM, Klaus Brockhaus
> <klaus-brockhaus at t-online.de> wrote:
>> Vincenzo,
>> I happened to look at A023200 and saw that some time ago you corrected
>> the definition.
>>        %N A023200 Primes p such that p and p + 4 are both primes.
>>        %E A023200 Definition corrected by Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 02 2009
>> In my view this definition is somewhat clumsy, it contains the
>> redundancy "Primes p such that p is prime".
>> Possibly better definitions are
>>        %N A023200 Numbers n such that n and n+4 are prime.
>>        %N A023200 Primes p such that p+4 is prime.
>> Would you please tell which wording the definition had before you
>> corrected it?

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