[seqfan] Re: Primes embedded

zak seidov zakseidov at yahoo.com
Thu May 6 18:32:47 CEST 2010


As to give more aruments to Marc (and me):

%N A177247 Fibonacci numbers Fib(n) whose decimal expression does not contain any digit 6.


--- On Thu, 5/6/10, Marc LeBrun <mlb at well.com> wrote:

> From: Marc LeBrun <mlb at well.com>
> Subject: [seqfan] Re: Primes embedded
> To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
> Date: Thursday, May 6, 2010, 11:40 AM
> > a(n) > a(n-1) and a(n) is the
> smallest available composite
> > embedding the smallest not yet embedded prime:
>> >
> S=12,30,35,57,110,130,170,190,230,290,310,370,410,430,447,453,...
> > p= 2 3   5  7 11  13 
> 17  19  23  29  31  37 
> 41  43   47  53 ...
>> > Could please someone compute a hundred terms or so,
> rephrase
> > my definition in good English, coauthor and submit (if
> of
> > interest)?
> 
> Seqfans, please, can we show a little more common sense and
> restraint?
> 
> Forgive me if I've not yet drunk enough coffee this morning
> to attain a
> sufficiently indulgent frame of mind, and I don't mean to
> pick on anyone
> personally, but these kinds of submissions are alarmingly
> on the increase.
> 
> I feel compelled to suggest they seem to be the epitome of
> "uninteresting".
> 
> I've always supported a highly permissive filter for OEIS
> submissions. But
> merely playing with strings of decimal digits is decidedly
> NOT interesting.
> 
> Nor does alluding to the "primes" contribute any interest
> whatsoever, since
> it might equally as well have been Fibonacci numbers,
> powers of 69, Seqfan's
> IP addresses, or any other arbitrarily chosen digit-pattern
> match.
> 
> The OEIS is intended to be an encyclopedia of INTEGER
> sequences, not an
> encyclopedia of peculiar [1] TEXT fragments subject to
> geeky gematria [2].
> 
> Spewing these kinds of sequences really feels like a very
> unkind imposition
> on everyone's time and attention (especially Neil's
> (especially now)).  This
> is exacerbated by requesting others do the work of
> composition, description
> and submission.
> 
> Worst of all, such sequences permanently dilute, if not
> pollute, the value
> of the OEIS, making it harder for users to get meaningful
> results from
> queries, and harder for programs to compute truly
> interesting relationships.
> 
> It's like flooding the Louvre with zillions of sketchy
> kindergarten finger
> paintings.  There's enough room so that submissions
> need not be anything
> near masterpieces, but surely better impulse control could
> be exercised?
> 
> Respectfully yours,
>   --MLB
> 
> ========
> Notes:
> 
> [1] Consider: interpreting the elements of OEIS sequences
> straightforwardly
> as integers is lucid.  But precisely specifying them
> as text reveals such an
> alternative definition would be ludicrous.  Those
> truly interested in the
> "Online Encyclopedia of <Finite Non-empty Strings
> Comprised of Either Just
> the Single Character 'Zero', or a Single Non-zero Digit
> Character Followed
> by Any Number of Digit Characters, Including None>
> Sequences" are of course
> free to create and maintain "the
> OE<FNSCEJSCZSNDCFANDCIN>S".  But this isn't
> the charter of the OEIS.
> 
> [2] "Gematria... a system of assigning numerical value to a
> word or phrase,
> in the belief that words or phrases with identical
> numerical values bear
> some relation to each other, or bear some relation to the
> number itself..."
>   --Wikipedia
> 
> 
> 
> 
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> 
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> 


      




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