A182327 Primes of the form 3^k + k + 1.
2, 5, 31, 14348923, 2954312706550833698689, 66555937033867822607895549241096482953017615834735226281, 7282483350946404208076885500996745047522350034970917293604274649554310785227
Offset: 1
Keywords
Programs
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Mathematica
Select[Table[3^n + n + 1, {n, 0, 150}], PrimeQ] (* T. D. Noe, Apr 25 2012 *)
Extensions
a(7) from Seiichi Manyama, Mar 25 2018