A366956 Numbers k such that 3^k*k^3 - 2 is a prime.

3, 15, 23, 53, 79, 1767, 2325, 2553, 8355, 12707, 13377, 17265, 30165, 45807, 65773, 98981

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Mathematica

Select[Range[3000], PrimeQ[3^#*#^3 - 2] &] (* Amiram Eldar, Oct 30 2023 *)

Prog

(Magma) [k: k in [1..500] | IsPrime(3^k*k^3-2)];

Crossrefs

Cf. A058780, A058781.

Sequence in context: A225060 A060649 A344073 * A009210 A142882 A161467

Adjacent sequences: A366953 A366954 A366955 * A366957 A366958 A366959

Keyword

nonn,more

Author

Juri-Stepan Gerasimov, Oct 30 2023

Extensions

a(10)-a(12) from Amiram Eldar, Oct 30 2023

a(13)-a(14) from Hugo Pfoertner, Oct 31 2023

a(15) from Michael S. Branicky, Nov 04 2023

a(16) from Michael S. Branicky, Aug 25 2024

Status

approved