[seqfan] Re: Sets of composite numbers

Robert G. Wilson v rgwv at rgwv.com
Mon Jul 28 20:48:55 CEST 2014


Your first column is just one more than A002386(n). RGWv

-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Eric Angelini
Sent: Monday, July 28, 2014 12:52 PM
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: Sets of composite numbers

Yes, my apologizes too, Frank !
Best,
É.

Catapulté de mon aPhone

> Le 28 juil. 2014 à 18:07, "Frank Adams-Watters" <franktaw at netscape.net> a écrit :
> 
> By the way, please don't use "composite" when you mean "non-prime". 
> One is not a composite number.
> 
> Franklin T. Adams-Watters
> 
> -----Original Message-----
> From: Eric Angelini <Eric.Angelini at kntv.be>
> To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> Sent: Mon, Jul 28, 2014 9:28 am
> Subject: [seqfan] Re: Sets of composite numbers
> 
> Sorry Edwin and Max -- I'm out of focus these days...
> best,
> É.
> 
> 
> -----Message d'origine-----
> De : SeqFan [mailto:seqfan-bounces at list.seqfan.eu] De la part de W. 
> Edwin Clark
> Envoyé : lundi 28 juillet 2014 16:19
> À : Sequence Fanatics Discussion list
> Objet : [seqfan] Re: Sets of composite numbers
> 
> Why don't you use 8,9,10 for n = 3?
> 
> 
> On Mon, Jul 28, 2014 at 10:04 AM, Eric Angelini 
> <Eric.Angelini at kntv.be>
> wrote:
> 
>> Sorry:  D = 1,9,16,27,28,95...
>> 
>>> Hello SeqFans,
>> the 1st column is "n", the number of elements of the set; the 2nd 
>> column is the smallest set of "n" consecutive composites.
>> 
>> 1____1
>> 2____8,9
>> 3____14,15,16
>> 4____24,25,26,27
>> 5____24,25,26,27,28
>> 6____90,91,92,93,94,95
>> ...
>> 
>> If I'm not wrong, the seq C = 1,8,14,24,24,90,... is not in the OEIS.
>> And if C is of interest, why not D = 1,9,16,28,95,...
>> 
>> 
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>> 
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