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A171227 Numbers n such that 9+10^n+9*100^n is prime. 0
0, 1, 4, 17, 26, 28, 47, 70, 91, 1129 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

No more terms up to n=4100.

LINKS

Table of n, a(n) for n=1..10.

PROG

(PARI) is(n)=ispseudoprime(9+10^n+9*100^n) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Cf. A083816.

Sequence in context: A273022 A273119 A302618 * A061387 A335593 A319970

Adjacent sequences:  A171224 A171225 A171226 * A171228 A171229 A171230

KEYWORD

more,nonn

AUTHOR

Jason Earls, Dec 05 2009

STATUS

approved

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Last modified September 30 11:00 EDT 2022. Contains 357105 sequences. (Running on oeis4.)