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A169602 Numbers n such that (10^n-1)^2+2 is prime. 0
0, 1, 2, 4, 5, 17, 18, 23, 57, 58, 340, 837 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

No more terms up to n=4000.

LINKS

Table of n, a(n) for n=0..11.

PROG

(PARI) is(n)=ispseudoprime((10^n-1)^2+2) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A070917 A038757 A062549 * A092051 A065063 A276311

Adjacent sequences:  A169599 A169600 A169601 * A169603 A169604 A169605

KEYWORD

more,nonn

AUTHOR

Jason Earls, Dec 03 2009

STATUS

approved

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Last modified January 23 01:30 EST 2020. Contains 331166 sequences. (Running on oeis4.)