A092022 Numbers k such that 16k + 3 is prime.

0, 1, 4, 5, 8, 10, 11, 13, 14, 19, 26, 29, 31, 34, 35, 40, 41, 43, 46, 49, 55, 59, 68, 70, 73, 74, 80, 89, 91, 95, 98, 101, 104, 106, 109, 113, 119, 124, 125, 130, 131, 133, 136, 140, 146, 148, 154, 158, 161, 166, 169, 175, 176, 178, 185, 188, 199, 200, 203, 206, 208

Offset: 1

Author

Ray Chandler, Mar 15 2004

Keywords

• nonn
• easy
• changed

Links

• Zak Seidov, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A091968, A093012.

Programs

Magma

[n: n in [0..300] |IsPrime(16*n+3)]; // Vincenzo Librandi, Mar 28 2015

Mathematica

Select[Range[0, 208], PrimeQ[16# + 3] &] (* Ray Chandler, Mar 15 2004 *)

PARI

is(n)=isprime(16*n+3) \\ Charles R Greathouse IV, Feb 17 2017

Formula

a(n) = (A091968(n)-3)/16. - Zak Seidov, Mar 28 2015