Primes of the form 2*p^2 + 4*p + 1, where p is also prime.

Terms

a(0) =17a(1) =31a(2) =71a(3) =127a(4) =647a(5) =1151a(6) =2887a(7) =3527a(8) =7687a(9) =12799a(10) =19207a(11) =20807a(12) =23327a(13) =34847a(14) =39199a(15) =49927a(16) =53791a(17) =73727a(18) =79999a(19) =103967a(20) =117127a(21) =145799a(22) =172871a(23) =194687a(24) =220447a(25) =279751a(26) =294911a(27) =323207a(28) =336199a(29) =387199