The upper twin prime whose lower member has a prime index.

Terms

a(0) =5a(1) =7a(2) =13a(3) =19a(4) =43a(5) =61a(6) =181a(7) =193a(8) =433a(9) =463a(10) =601a(11) =619a(12) =1033a(13) =1789a(14) =2029a(15) =2083a(16) =2383a(17) =2551a(18) =3301a(19) =4093a(20) =4219a(21) =4423a(22) =4519a(23) =4789a(24) =5023a(25) =5443a(26) =5653a(27) =9001a(28) =9043a(29) =9463