OFFSET
1,2
COMMENTS
Numbers k such that A363796(k) = 3.
Any subsequent terms are > 100000. - Lucas A. Brown, Oct 18 2024
EXAMPLE
a(3) = 4 is a term because 3^4 + 2*4 = 89 is prime.
MAPLE
select(k -> isprime(3^k + 2*k), [$1..7000]);
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert Israel, Jun 23 2023
EXTENSIONS
a(16)-a(19) from Michael S. Branicky, Jun 23 2023
STATUS
approved