A111174 Numbers k such that 24*k + 1 is prime.

3, 4, 8, 10, 13, 14, 17, 18, 19, 24, 25, 28, 32, 39, 42, 43, 47, 48, 50, 52, 54, 55, 62, 67, 69, 73, 74, 75, 78, 83, 84, 87, 88, 89, 90, 95, 99, 103, 105, 108, 109, 112, 113, 118, 119, 123, 125, 127, 130, 132, 134, 138, 140, 143, 144, 147, 153, 154, 157, 158, 162

Offset: 1

Author

Parthasarathy Nambi, Oct 21 2005

Keywords

• nonn

Comments

Half of the even terms in A110801. - R. J. Mathar, Jan 31 2011

Examples

			If k=99 then 24*k + 1 = 2377 (prime).
		

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A153384 (complement), A107008 (conjecturally equivalent)

Programs

Magma

[ n: n in [0..1500] | IsPrime(24*n + 1) ]; // Vincenzo Librandi, Jan 31 2011

Mathematica

Select[Range[200],PrimeQ[24#+1]&] (* Harvey P. Dale, Apr 01 2018 *)

PARI

is(n)=isprime(24*n+1) \\ Charles R Greathouse IV, Feb 20 2017

Extensions

More terms from Christian G. Bower, Jan 06 2006