A174812 Primes of the form n^2+42.

43, 67, 163, 211, 331, 571, 883, 1723, 2251, 2851, 3067, 7963, 9067, 10243, 10651, 11491, 11923, 13267, 14683, 15667, 17203, 21067, 24691, 28603, 32083, 32803, 34267, 36523, 38851, 44563, 48883, 54331, 57163, 61051, 73483, 76771, 83563, 89443, 94291, 96763, 98011, 105667, 121843

Offset

1,1

Links

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

Mathematica

Select[Range[1, 400, 2]^2 + 42, PrimeQ] (* Vincenzo Librandi, Jul 26 2012 *)

Prog

(Magma) [a: n in [1..350 by 2] | IsPrime(a) where a is n^2+42];

Crossrefs

Cf. A104110 (associated n).

Subsequence of A002476.

Sequence in context: A174022 A033229 A139875 * A146355 A175730 A087765

Adjacent sequences: A174809 A174810 A174811 * A174813 A174814 A174815

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 02 2010

Status

approved