A199364 Numbers k such that 4k^3 + 3 is prime.

0, 1, 5, 10, 14, 20, 28, 34, 38, 49, 55, 59, 61, 80, 98, 103, 118, 133, 145, 146, 154, 160, 185, 196, 206, 224, 229, 241, 245, 250, 251, 320, 325, 334, 376, 383, 385, 388, 398, 416, 418, 440, 451, 454, 475, 476, 481, 488, 490, 493, 496, 500

Offset

1,3

Comments

See comment in A199307.

Links

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

Mathematica

Select[Range[0, 3000], PrimeQ[4#^3+3]&] (* Vincenzo Librandi, Aug 01 2012 *)

Prog

(Magma) [n: n in [0..500] | IsPrime(4*n^3+3)];  // Bruno Berselli, Nov 08 2011
(PARI) is(n)=isprime(4*n^3+3) \\ Charles R Greathouse IV, May 22 2017

Crossrefs

Cf. A199307, A199365.

Sequence in context: A313652 A313653 A313654 * A313655 A313656 A313657

Adjacent sequences: A199361 A199362 A199363 * A199365 A199366 A199367

Keyword

nonn,easy

Author

N. J. A. Sloane, Nov 05 2011

Extensions

First term added by Vincenzo Librandi, Nov 08 2011

Status

approved