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A289983
Primes of the form 3^k - 32.
1
211, 6529, 387420457, 10460353171, 834385168331080533771857328695251, 11972515182562019788602740026717047105649, 228532044137599177017869183161846685251274404207185590172004697234871412029099114058771
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^A219049(n) - 32. - Elmo R. Oliveira, Nov 12 2023
MATHEMATICA
Select[Table[3^k - 32], {k, 4, 100}], PrimeQ[#] &]
CROSSREFS
Cf. A000040, A219049 (corresponding k's).
Sequence in context: A224101 A013529 A229519 * A212851 A069425 A276461
KEYWORD
nonn
AUTHOR
Robert Price, Sep 02 2017
STATUS
approved