Primes p with q = p + 2 and prime(q) + 2 both prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =41a(4) =107a(5) =311a(6) =461a(7) =599a(8) =641a(9) =1277a(10) =1619a(11) =1997a(12) =2309a(13) =2381a(14) =2789a(15) =3671a(16) =4787a(17) =5099a(18) =6659a(19) =6701a(20) =6827a(21) =7457a(22) =7487a(23) =8219a(24) =8537a(25) =8597a(26) =9929a(27) =10709a(28) =11117a(29) =12071