Primes which are a concatenation of prime(n) and n.

Terms

a(0) =53a(1) =239a(2) =6719a(3) =7321a(4) =15737a(5) =30763a(6) =38977a(7) =41981a(8) =44987a(9) =587107a(10) =661121a(11) =751133a(12) =1051177a(13) =1229201a(14) =1297211a(15) =1303213a(16) =1327217a(17) =1823281a(18) =1913293a(19) =1999303a(20) =2131321a(21) =2179327a(22) =2207329a(23) =2239333a(24) =2371351a(25) =2689391a(26) =2699393a(27) =3067439