cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

Original entry on oeis.org

0, 1, 9, 13, 27, 45, 169, 285, 307, 891, 4545, 9173, 20803
Offset: 1

Views

Author

Juri-Stepan Gerasimov, Oct 31 2023

Keywords

Comments

If it exists, a(14) > 70000. - Hugo Pfoertner, Nov 02 2023

Crossrefs

Cf. A366956.

Programs

  • Magma
    [k: k in [1..310] | IsPrime(3^k*k^3+2)];
  • Mathematica
    Select[Range[0, 5000], PrimeQ[3^#*#^3 + 2] &] (* Amiram Eldar, Nov 02 2023 *)

Extensions

a(12)-a(13) from Michael S. Branicky, Oct 31 2023
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