A249666 Numbers n such that the sum of n and the largest primeA151799(n)) is prime.

3, 4, 6, 10, 12, 16, 22, 24, 30, 36, 42, 46, 50, 54, 56, 66, 70, 76, 78, 84, 90, 92, 100, 114, 116, 120, 126, 130, 132, 142, 144, 156, 160, 170, 174, 176, 180, 186, 192, 196, 202, 210, 220, 222, 226, 232, 234, 240, 246, 250, 252, 276, 280, 282, 286, 288, 294, 300, 306, 310, 324

Offset: 1

Author

Antonio Roldán, Dec 03 2014

Keywords

• nonn

Examples

			66 is in the sequence because A151799(66)=61, and 66+61=127 is prime.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A151799, A249624, A249667, A249676.

Programs

Mathematica

Select[Range[400],PrimeQ[#+NextPrime[#,-1]]&] (* Harvey P. Dale, Aug 04 2019 *)

PARI

{for(i=3,10^3,k=i+precprime(i-1);if(isprime(k),print1(i,", ")))}