OFFSET
1,3
COMMENTS
Complement of A007636. - Michel Marcus, Jun 17 2013
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..10000
Patrick De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)
EXAMPLE
15^2 + 15 + 17 = 257, which is prime, so 15 is in the sequence.
16^2 + 16 + 17 = 289 = 17^2, so 16 is not in the sequence. Much more obviously, 17 is not in the sequence either.
MATHEMATICA
Select[Range[0, 199], PrimeQ[#^2 + # + 17] &] (* Indranil Ghosh, Mar 19 2017 *)
PROG
(Magma) [n: n in [0..1000] |IsPrime(n^2+n+17)] // Vincenzo Librandi, Nov 19 2010
(PARI) is(n)=isprime(n^2+n+17) \\ Charles R Greathouse IV, Feb 20 2017
(Python)
from sympy import isprime
print([n for n in range(201) if isprime(n**2 + n + 17)]) # Indranil Ghosh, Mar 19 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved