A147515 Numbers n with property that (2n)^4+3 is prime.

0, 1, 4, 8, 11, 13, 14, 17, 22, 31, 34, 38, 41, 46, 52, 55, 59, 64, 67, 83, 92, 101, 106, 133, 143, 148, 157, 164, 175, 178, 188, 203, 214, 218, 230, 235, 253, 260, 266, 281, 290, 319, 325, 326, 340, 346, 361, 367, 370, 389, 406, 410, 412, 431, 448, 454, 461, 466

Offset: 1

Author

Zak Seidov, Nov 05 2008

Keywords

• nonn

Links

• Zak Seidov, Table of n, a(n) for n=1..1000

Crossrefs

Cf. A125259.

Programs

Mathematica

Select[Range[0,500],PrimeQ[(2#)^4+3]&] (* Harvey P. Dale, Jul 18 2019 *)

PARI

isok(n) = isprime((2*n)^4+3); \\ Michel Marcus, Oct 15 2013

Formula

a(n) = A125259(n)/2.