[seqfan] Re: Classic sequence A000229 needs a b-file

[Charles Greathouse]

It looks hard to me. a(n) should be within a few orders of magnitude of
n*2^n and unless you can exclude almost all of the candidates quickly
larger values seem out of reach. If Tomás was only able to find 38 terms I
doubt many more are within mortal reach at present technology.

Charles Greathouse
Analyst/Programmer
Case Western Reserve University


On Tue, Sep 3, 2013 at 1:17 PM, Neil Sloane <njasloane at gmail.com> wrote:

> A000229a(n) is the least number such that the n-th prime is the least
> quadratic nonresidue for a(n) (a(n) is always a prime).  (Formerly M2684
> N1074)
>
> This sequence was recently mentioned in
> a physics paper. Maybe it is hard to compute, but
> if not it could use a b-file!
>
> Neil
>
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