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A363797
Numbers k such that 3^k + 2*k is prime.
1
1, 2, 4, 8, 10, 14, 17, 34, 74, 127, 137, 160, 925, 1117, 5767, 11810, 15220, 37015, 46289
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
Cf. A363796.
Sequence in context: A290476 A189670 A341822 * A034822 A300781 A050567
KEYWORD
nonn,more
AUTHOR
Robert Israel, Jun 23 2023
EXTENSIONS
a(16)-a(19) from Michael S. Branicky, Jun 23 2023
STATUS
approved