A370658 Numbers k such that (3^k + 3*k)/3 is prime.

1, 2, 4, 16, 46, 118, 160, 3740, 3778, 9704, 10624, 21460

Offset

1,2

Comments

If it exists, a(13) > 75000.

Links

Table of n, a(n) for n=1..12.

Crossrefs

Cf. A104743, A221905.

Sequence in context: A062330 A133465 A110128 * A148279 A101061 A148280

Adjacent sequences: A370655 A370656 A370657 * A370659 A370660 A370661

Keyword

nonn,hard,more

Author

Hugo Pfoertner, Feb 27 2024

Status

approved