[seqfan] Re: Primes mod 6

[israel at math.ubc.ca]

See e.g. "Prime Number Races" by Andrew Granville and Greg Martin,
American Mathematical Monthly Vol. 113, No. 1 (Jan., 2006), pp. 1-33
http://mathdl.maa.org/images/upload_library/22/Ford/granville1.pdf

Robert Israel                                israel at math.ubc.ca
Department of Mathematics        http://www.math.ubc.ca/~israel 
University of British Columbia            Vancouver, BC, Canada

On Oct 8 2011, franktaw at netscape.net wrote:

>https://oeis.org/draft/A174695 is the number of primes, through the 
>n-th prime, congruent to 5 (mod 6), minus the number congruent to 1 
>(mod 6).
>
>I seem to remember seeing something recently implying that this 
>sequence is always nonnegative. I don't remember where, however. Can 
>anyone clarify this, or am going into early senility?
>
>Franklin T. Adams-Watters
>
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