[seqfan] Re: %C A001602(?)

[Richard Guy]

There's no exception if you say

``... divisor of  p - (p|5)''  where (p|5)
is the Legendre symbol.    R.

On Fri, 30 Apr 2010, Richard Mathar wrote:

>
> In http://list.seqfan.eu/pipermail/seqfan/2010-April/004528.html someone said
>
> zs> Date: Thu, 29 Apr 2010 19:47:07 -0700 (PDT)
> zs> Cc: seqfaneu <seqfan at seqfan.eu>
> zs> Subject: [seqfan]  %C A001602(?)
> zs> ...
> zs> Some rewording is needed in %C below, right?
> zs> ...
> zs> %C A001602 "[a(n)] is called by Lucas the rank of apparition of p and we know it is a divisor of, or equal to p-1 or p+1" - Vajda, p. 84. [Note that
> zs> a(5)=5. This is the only exception. - Chris Caldwell, Nov 03 2008]
>
> "a(5)=5" should be replaced by "for p=5, a(3)=5" or s.th. similar:
>
> %C A001602 "[a(n)] is called by Lucas the rank of apparition of p and we know it is a divisor of, or equal to p-1 or p+1" - Vajda, p. 84. [Note that
> for p=5, a(3)=5. This is the only exception. - Chris Caldwell, Nov 03 2008]
>
>
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