Sophie Germain primes p such that p+6 and p-6 are primes.

Terms

a(0) =11a(1) =23a(2) =53a(3) =173a(4) =233a(5) =593a(6) =653a(7) =1103a(8) =1223a(9) =2693a(10) =2903a(11) =2963a(12) =4793a(13) =5303a(14) =6263a(15) =6323a(16) =7823a(17) =9473a(18) =10253a(19) =11783a(20) =12653a(21) =13463a(22) =15803a(23) =20753a(24) =25673a(25) =27743a(26) =27773a(27) =29873a(28) =31253a(29) =33623