Primes that are a concatenation of 2, 3 and a prime.

Terms

a(0) =233a(1) =2311a(2) =2341a(3) =2347a(4) =2371a(5) =2383a(6) =2389a(7) =23131a(8) =23167a(9) =23173a(10) =23197a(11) =23227a(12) =23251a(13) =23269a(14) =23293a(15) =23311a(16) =23431a(17) =23509a(18) =23557a(19) =23563a(20) =23593a(21) =23599a(22) =23677a(23) =23719a(24) =23743a(25) =23761a(26) =23773a(27) =23827a(28) =23857a(29) =23887