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A366997 Numbers m such that 3^k*k^3 + 2 is a prime. 0

%I #18 Nov 02 2023 19:00:37

%S 0,1,9,13,27,45,169,285,307,891,4545,9173,20803

%N Numbers m such that 3^k*k^3 + 2 is a prime.

%C If it exists, a(14) > 70000. - _Hugo Pfoertner_, Nov 02 2023

%t Select[Range[0, 5000], PrimeQ[3^#*#^3 + 2] &] (* _Amiram Eldar_, Nov 02 2023 *)

%o (Magma) [k: k in [1..310] | IsPrime(3^k*k^3+2)];

%Y Cf. A366956.

%K nonn,more

%O 1,3

%A _Juri-Stepan Gerasimov_, Oct 31 2023

%E a(12)-a(13) from _Michael S. Branicky_, Oct 31 2023

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Last modified September 14 11:47 EDT 2024. Contains 375921 sequences. (Running on oeis4.)