A058015 Numbers k such that 2^k + k^3 is prime.
1, 5, 35, 821, 1079, 1301, 3539, 16991, 20087, 29951
Offset: 1
Programs
-
Mathematica
Select[Range[0, 5000], PrimeQ[(2^# + #^3)] &] (* Vincenzo Librandi, Sep 29 2012 *)
-
PARI
is(n)=ispseudoprime(2^n+n^3) \\ Charles R Greathouse IV, Jun 12 2017
Extensions
a(5)-a(6) from Erich Friedman, Jun 15 2001
a(7) from Vincenzo Librandi, Sep 29 2012
a(8)-a(10) from Michael S. Branicky, Jun 14 2021
Comments