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A058015
Numbers k such that 2^k + k^3 is prime.
1
1, 5, 35, 821, 1079, 1301, 3539, 16991, 20087, 29951
OFFSET
1,2
COMMENTS
a(11) > 2*10^5. - Michael S. Branicky, Oct 23 2024
MATHEMATICA
Select[Range[0, 5000], PrimeQ[(2^# + #^3)] &] (* Vincenzo Librandi, Sep 29 2012 *)
PROG
(PARI) is(n)=ispseudoprime(2^n+n^3) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
Sequence in context: A260075 A317816 A034236 * A053420 A321605 A001802
KEYWORD
nonn,more,changed
AUTHOR
Harrison Brown (nanb(AT)mindspring.com), Nov 14 2000
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
STATUS
approved