[seqfan] Re: A025129

[Neil Sloane]

I would say: change the offset, add the initial 0!
Neil


On Sun, Apr 6, 2014 at 8:23 PM, <israel at math.ubc.ca> wrote:

> The stated definition of A025129 is
>
> a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s =
> (primes).
>
> According to this, we should have a(1) = 0, a(2) = A000040(1)*A000040(2) =
> 6, a(3) = A000040(1)*A000040(3) = 10, etc, but the given entries are 6, 10,
> 29, ... with offset 1,1.
>
> So: change the definition, change the offset, or change the entries?
>
> Robert Israel
> University of British Columbia and D-Wave Systems
>
>
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>



-- 
Dear Friends, I have now retired from AT&T. New coordinates:

Neil J. A. Sloane, President, OEIS Foundation
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