Primes that are concatenations of n with n + 8.

Terms

a(0) =19a(1) =311a(2) =1321a(3) =1523a(4) =2129a(5) =3947a(6) =4957a(7) =5563a(8) =6977a(9) =7583a(10) =9199a(11) =111119a(12) =115123a(13) =159167a(14) =163171a(15) =165173a(16) =169177a(17) =171179a(18) =183191a(19) =193201a(20) =195203a(21) =199207a(22) =201209a(23) =205213a(24) =211219a(25) =229237a(26) =235243a(27) =241249a(28) =249257a(29) =265273