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A053760 Smallest positive quadratic nonresidue modulo p, where p is the n-th prime. +0
5
2, 2, 2, 3, 2, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 2, 2, 2, 7, 5, 3, 2, 3, 5, 2, 3, 2, 2, 3, 3, 2, 3, 2, 2, 3, 2, 2, 5, 2, 2, 2, 7, 5, 2, 3, 2, 3, 2, 2, 3, 7, 7, 2, 3, 5, 2, 3, 2, 3, 2, 2, 2, 11, 5, 2, 2, 5, 2, 2, 3, 7, 3, 2, 2, 5, 2, 2, 3, 7, 2, 2, 7, 5, 3, 2, 3, 5, 2, 3, 2, 13, 3, 2, 2, 5, 2, 3, 2, 2, 2, 2, 2 (list; graph; listen)
OFFSET

1,1

COMMENT

Assuming the Generalized Riemann Hypothesis, Montgomery proved a(n) << (log p(n))^2, meaning that there is a constant c such that |a(n)| =< c*(log p(n))^2. - Jonathan Vos Post (jvospost3(AT)gmail.com), Jan 06 2007

REFERENCES

R. Baillie and S. S. Wagstaff, Lucas pseudoprimes, Math. Comp. 35 (1980) 1391-1417; Math. Rev. 81j:10005.

P. Erdos, Remarks on number theory. I., Mat. Lapok 12 (1961) 10-17; Math. Rev. 26 #2410.

S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 94-98.

P. Ribenboim, The New Book of Prime Number Records, 3rd ed., Spinger-Verlag 1996; Math. Rev. 96k:11112.

H. L. Montgomery, Topics in Multiplicative Number Theory, 3rd ed., Lecture Notes in Mathematics, Vol. 227 (1971), MR 49:2616.

LINKS

S. R. Finch, Quadratic Residues

K. Matthews, Finding n(p), the least quaratic non-residue (mod p)

Eric Weisstein's World of Mathematics, Quadratic Nonresidue

CROSSREFS

Sequence in context: A085694 A160493 A091322 this_sequence A129654 A138789 A116504

Adjacent sequences: A053757 A053758 A053759 this_sequence A053761 A053762 A053763

KEYWORD

nonn

AUTHOR

S. R. Finch (Steven.Finch(AT)inria.fr), Apr 05 2000

EXTENSIONS

More terms from James A. Sellers (sellersj(AT)math.psu.edu), Apr 08 2000

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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