A049490 a(n) and a(n)+64 both prime.

3, 7, 19, 37, 43, 67, 73, 103, 109, 127, 163, 193, 199, 229, 283, 337, 367, 379, 397, 439, 457, 499, 523, 577, 613, 619, 709, 733, 757, 823, 877, 883, 907, 919, 967, 997, 1033, 1039, 1087, 1117, 1123, 1129, 1153, 1213, 1237, 1297, 1303, 1423, 1429, 1447

Offset: 1

Author

Labos Elemer

Keywords

• nonn

Examples

			19 and 19+64=83 both prime.
		

Links

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

Crossrefs

Cf. A001359, A023200, A023202.

Programs

Mathematica

Select[Prime[Range[300]],PrimeQ[#+64]&] (* Harvey P. Dale, Mar 21 2011 *)

PARI

select(p -> isprime(p+64),primes(1000)) \\ Edward Jiang, Sep 05 2014