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A289725
Primes of the form 3^k - 26.
1
2161, 59023, 1594297, 31381059583, 7625597484961, 205891132094623, 1570042899082081611640534537, 381520424476945831628649898783, 66555937033867822607895549241096482953017615834735226137
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
MATHEMATICA
Select[Table[3^k - 26], {k, 3, 100}], PrimeQ[#] &]
PROG
a(n) = 3^A219045(n) - 26. - Elmo R. Oliveira, Nov 12 2023
CROSSREFS
Cf. A000040, A219045 (corresponding k's).
Sequence in context: A154822 A061335 A159238 * A116074 A252563 A035872
KEYWORD
nonn
AUTHOR
Robert Price, Sep 02 2017
STATUS
approved