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A084538 Least primitive root mod 2*prime(n)^2. 1
5, 3, 3, 7, 7, 3, 3, 5, 3, 3, 5, 7, 3, 5, 3, 11, 7, 7, 7, 5, 3, 5, 3, 5, 3, 5, 5, 11, 3, 3, 17, 3, 3, 3, 7, 5, 3, 5, 3, 7, 21, 19, 5, 3, 3, 3, 3, 5, 7, 3, 7, 7, 11, 3, 5, 3, 15, 5, 3, 3, 3, 5, 17, 15, 3, 3, 15, 5, 7, 3, 7, 11, 5, 3, 5, 3, 5, 3, 21, 11, 23, 7, 5, 15, 5, 3, 13, 3, 3, 5, 13, 3, 7, 7, 5, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..98.

P. D. T. A. Elliott and L. Murata, The least primitive root mod 2*p^2, Mathematika, 45 (1998), 371-379.

MAPLE

with(numtheory): A084538 := n-> primroot(2*ithprime(n)^2);

CROSSREFS

Sequence in context: A337571 A244683 A263157 * A263492 A335765 A276759

Adjacent sequences:  A084535 A084536 A084537 * A084539 A084540 A084541

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 30 2003

STATUS

approved

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Last modified October 22 21:41 EDT 2021. Contains 348180 sequences. (Running on oeis4.)