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A302134 Numbers k such that 9*k^k - 8 is prime. 4
7, 9, 11, 353 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

9*353^353 - 8 is a probable prime.

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) isok(k) = ispseudoprime(9*k^k - 8); \\ Altug Alkan, Apr 02 2018

CROSSREFS

Numbers k such that b*k^k - b + 1 is prime: A110931 (b=2), A302132 (b=3), A301521 (b=4), A302123 (b=6), A302133 (b=8), this sequence (b=9), A302136 (b=10).

Sequence in context: A029634 A023180 A029474 * A259601 A075335 A250220

Adjacent sequences:  A302131 A302132 A302133 * A302135 A302136 A302137

KEYWORD

nonn,more

AUTHOR

Seiichi Manyama, Apr 02 2018

STATUS

approved

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Last modified August 25 14:35 EDT 2019. Contains 326324 sequences. (Running on oeis4.)