A228244 Primes of the form n^2+17.

17, 53, 593, 3617, 4373, 6101, 8117, 11681, 20753, 26261, 30293, 34613, 54773, 63521, 86453, 90017, 101141, 108917, 112913, 116981, 138401, 156833, 176417, 191861, 207953, 213461, 219041, 248021, 278801, 352853, 404513, 419921, 427733, 451601

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Example

17 = 0^2+17 is prime.
53 = 6^2+17 is prime.

Mathematica

Select[Table[n^2 + 17, {n, 0, 900}], PrimeQ] (* Bruno Berselli, Aug 18 2013 *)

Prog

(PARI) isp(n) = isprime(n) && issquare(n-17);
(Magma) [m: n in [0..900] | IsPrime(m) where m is n^2+17]; // Bruno Berselli, Aug 18 2013

Crossrefs

Cf. A056899, A049423, A056905, A079138, A138362, A138375.

Sequence in context: A146714 A146397 A146405 * A158968 A072895 A300059

Adjacent sequences: A228241 A228242 A228243 * A228245 A228246 A228247

Keyword

nonn,easy

Author

Michel Marcus, Aug 18 2013

Status

approved