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

Terms

a(0) =3a(1) =5a(2) =17a(3) =41a(4) =1949a(5) =2309a(6) =2711a(7) =2789a(8) =2801a(9) =3299a(10) =3329a(11) =3359a(12) =3917a(13) =4157a(14) =4217a(15) =4259a(16) =4637a(17) =5009a(18) =5021a(19) =5231a(20) =6449a(21) =7757a(22) =8087a(23) =8219a(24) =8627a(25) =9419a(26) =9929a(27) =10007a(28) =10937a(29) =11777