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A182327
Primes of the form 3^k + k + 1.
2
2, 5, 31, 14348923, 2954312706550833698689, 66555937033867822607895549241096482953017615834735226281, 7282483350946404208076885500996745047522350034970917293604274649554310785227
OFFSET
1,1
MATHEMATICA
Select[Table[3^n + n + 1, {n, 0, 150}], PrimeQ] (* T. D. Noe, Apr 25 2012 *)
CROSSREFS
Sequence in context: A295391 A259644 A132527 * A364270 A032504 A041397
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, Apr 25 2012
EXTENSIONS
a(7) from Seiichi Manyama, Mar 25 2018
STATUS
approved