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A007351 Where prime race 4m-1 vs. 4m+1 is tied.
(Formerly M1507)
14
2, 5, 17, 41, 461, 26833, 26849, 26863, 26881, 26893, 26921, 616769, 616793, 616829, 616843, 616871, 617027, 617257, 617363, 617387, 617411, 617447, 617467, 617473, 617509, 617531, 617579, 617681, 617707, 617719, 618437, 618521, 618593, 618637 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

n such that the number of primes <= n of the form 4m-1 is equal to the number of primes <= n of the form 4m+1.

REFERENCES

A. Granville and G. Martin, Prime number races, Amer. Math. Monthly, 113 (No. 1, 2006), 1-33.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

R. K. Guy, The strong law of small numbers. Amer. Math. Monthly 95 (1988), no. 8, 697-712. [Annotated scanned copy]

CROSSREFS

Cf. A007350, A038691.

Cf. A156749 Sequence showing Chebyshev bias in prime races (mod 4). [From Daniel Forgues, Mar 26 2009]

Sequence in context: A080898 A081763 A013918 * A076076 A136194 A056304

Adjacent sequences:  A007348 A007349 A007350 * A007352 A007353 A007354

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Mira Bernstein, Robert G. Wilson v

EXTENSIONS

Corrected and extended by Enoch Haga, Feb 24 2004

STATUS

approved

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Last modified August 18 14:09 EDT 2017. Contains 290720 sequences.