A161725 Primes p such that also p+30 and p-30 are primes.

37, 41, 43, 53, 59, 67, 71, 73, 83, 97, 101, 109, 127, 137, 167, 181, 193, 197, 211, 227, 241, 263, 281, 307, 337, 367, 379, 389, 409, 419, 431, 449, 461, 479, 491, 571, 577, 587, 601, 617, 631, 643, 647, 661, 739, 757, 827, 853, 857, 907, 911, 937, 941, 967

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Jun 17 2009

Keywords

• nonn

Examples

			The prime p=37 is in the sequence because 37-30=7 and 37+30=67 are also primes.
		

Links

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

Crossrefs

Cf. A006489, A137796, A161723, A161724, A052243.

Programs

Mathematica

q=6*5; lst={}; Do[p=Prime[n]; If[PrimeQ[p-q] && PrimeQ[p+q], AppendTo[lst,p]], {n, 5000}]; lst

Extensions

Definition edited by Emeric Deutsch, Jun 28 2009