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
KEYWORD
nonn,more
AUTHOR
Seiichi Manyama, Apr 02 2018
STATUS
approved