login
A220702
Numbers n such that n^5 + 5*n + 5^n is prime.
0
1, 2, 3, 4, 6, 19, 23, 63, 76, 508, 561, 839, 894, 1389, 2513, 3436, 6121, 7412, 8418, 9184
OFFSET
1,2
MATHEMATICA
Select[Range[10000], PrimeQ[#^5 + 5*# + 5^#]&]
PROG
(PARI) is(n)=ispseudoprime(n^5+5*n+5^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Cf. A220511.
Sequence in context: A069860 A084391 A259383 * A342503 A369773 A217351
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jan 07 2013
STATUS
approved