Primes that are the concatenation of prime(n) and prime(n+2).

Terms

a(0) =37a(1) =1117a(2) =1319a(3) =1723a(4) =4759a(5) =89101a(6) =97103a(7) =101107a(8) =113131a(9) =151163a(10) =181193a(11) =223229a(12) =227233a(13) =239251a(14) =251263a(15) =293311a(16) =313331a(17) =337349a(18) =389401a(19) =421433a(20) =461467a(21) =491503a(22) =587599a(23) =631643a(24) =647659a(25) =683701a(26) =691709a(27) =701719a(28) =739751a(29) =761773