[seqfan] Re: Sum of any pair of primes (or non-primes) is not in S
Eric Angelini
Eric.Angelini at kntv.be
Sun Feb 16 01:37:29 CET 2014
Hello David,
my apologizes -- I should have been more clear:
> The sum of any pair of primes is not in the sequence S
... should be understood:
> The sum of any pair of primes of S is not in the sequence S
Best,
E.
Catapulté de mon aPhone
> Le 15 févr. 2014 à 18:37, "David Applegate" <david at research.att.com> a écrit :
>
> I don't understand. For sums of distinct primes I find 2+5=7, 3+5=8,
> 5+7=12, 2+13=15, 5+11=16, 2+19=21, etc. in S.
>
> And for sums of non-primes, 4+9=13, 6+9=15, etc. are in T.
>
> David Applegate
>
>> From seqfan-bounces at list.seqfan.eu Sat Feb 15 12:26:28 2014
>> From: Eric Angelini <Eric.Angelini at kntv.be>
>> To: Sequence Discussion list <seqfan at list.seqfan.eu>
>> Date: Sat, 15 Feb 2014 18:26:06 +0100
>> Subject: [seqfan] Sum of any pair of primes (or non-primes) is not in S
>
>> Hello SeqFans,
>> The sum of any pair of primes is not
>> in the sequence S (if I'm not wrong):
>
>> S=1,2,3,4,6,7,8,11,12,15,16,17,21,22,
>> 23,27,29,33,35,37,38,41,...
>
>> Similarily, the sum of any pair of non-primes
>> is not in the sequence T:
>
>> T=1,2,3,4,6,8,11,13,15,17,18,20,25,27,30,32,37,39,41,44,...
>
>> Best,
>> ??.
>
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>
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