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Values of n for which pi_{12,7}(p_n) - pi_{12,1}(p_n) = -1, where p_n is the n-th prime and pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).
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%I #6 Feb 16 2025 08:33:52

%S 919096512484,919096512490,919096512492,919096512496,919096512500,

%T 919096512504,919096512517,919096512519,919096512648,919096512655,

%U 919096512662,919096512718,919096512725,919096512729,919096512741,919096512744,919096512747,919096512753,919096512798,919096512802

%N Values of n for which pi_{12,7}(p_n) - pi_{12,1}(p_n) = -1, where p_n is the n-th prime and pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).

%C This is a companion sequence to A297357 and includes the values of n for the first discovered sign-changing zone for pi_{12,7}(p) - pi_{12,1}(p) prime race. The full sequence checked up to 10^14 has 55596 terms (see b-file).

%H Sergei D. Shchebetov, <a href="/A297356/b297356.txt">Table of n, a(n) for n = 1..55596</a>

%H C. Bays, K. Ford, R. H. Hudson and M. Rubinstein, <a href="https://doi.org/10.1006/jnth.2000.2601">Zeros of Dirichlet L-functions near the real axis and Chebyshev's bias</a>, J. Number Theory 87 (2001), pp. 54-76.

%H A. Granville, G. Martin, <a href="https://www.maa.org/sites/default/files/pdf/upload_library/22/Ford/granville1.pdf">Prime Number Races</a>, Amer. Math. Monthly 113 (2006), no. 1, 1-33.

%H M. Rubinstein, P. Sarnak, <a href="https://projecteuclid.org/euclid.em/1048515870">Chebyshev's bias</a>, Experimental Mathematics, Volume 3, Issue 3, 1994, pp. 173-197.

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeQuadraticEffect.html">Prime Quadratic Effect</a>

%K nonn,changed

%O 1,1

%A Andrey S. Shchebetov and _Sergei D. Shchebetov_, Dec 29 2017