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A289984
Primes of the form 3^k - 34.
1
47, 2153, 177113, 1594289, 68630377364849, 1853020188851807, 150094635296999087, 984770902183611232847, 49269609804781974438694403402127765833, 809164816771822689786320611221860560835816670552324143733808294394923420529
OFFSET
1,1
LINKS
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
KEYWORD
nonn
AUTHOR
Robert Price, Sep 02 2017
STATUS
approved