A289984 Primes of the form 3^k - 34.

47, 2153, 177113, 1594289, 68630377364849, 1853020188851807, 150094635296999087, 984770902183611232847, 49269609804781974438694403402127765833, 809164816771822689786320611221860560835816670552324143733808294394923420529

Offset

1,1

Links

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

F. Firoozbakht and M. F. Hasler, Variations on Euclid's formula for Perfect Numbers, JIS 13 (2010) #10.3.1.

Henri and Renaud Lifchitz, PRP Records

OpenPFGW Project, Primality Tester

Formula

a(n) = 3^A219051(n) - 34. - Elmo R. Oliveira, Nov 12 2023

Mathematica

Select[Table[3^k - 34], {k, 4, 100}], PrimeQ[#] &]

Crossrefs

Cf. A000040, A219051 (corresponding k's).

Sequence in context: A014941 A280707 A324433 * A189173 A162896 A163265

Adjacent sequences: A289981 A289982 A289983 * A289985 A289986 A289987

Keyword

nonn

Author

Robert Price, Sep 02 2017

Status

approved