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A302132
Numbers k such that 3*k^k - 2 is prime.
3
3, 1571, 2601
OFFSET
1,1
COMMENTS
The terms greater than or equal to 1571 correspond to probable primes.
a(4) > 25000, if it exists. - Michael S. Branicky, Sep 02 2024
PROG
(PARI) isok(k) = ispseudoprime(3*k^k - 2); \\ Altug Alkan, Apr 02 2018
CROSSREFS
Numbers k such that b*k^k - b + 1 is prime: A110931 (b=2), this sequence (b=3), A301521 (b=4), A302123 (b=6), A302133 (b=8), A302134 (b=9), A302136 (b=10).
Sequence in context: A239503 A118050 A246637 * A346653 A258720 A262652
KEYWORD
nonn,more
AUTHOR
Seiichi Manyama, Apr 02 2018
STATUS
approved