A030996 Concatenation of n consecutive primes starting with the prime a(n) is a prime.

2, 2, 5, 2, 7, 113, 29, 107, 211, 691, 23, 11, 5, 71, 277, 181, 13, 307, 43, 223, 43, 167, 31, 23, 151, 29, 67, 383, 19, 53, 53, 277, 541, 37, 103, 127, 947, 79, 4409, 1699, 13, 73, 31, 107, 751, 1187, 1069, 859, 67, 229, 293, 47, 1303, 2909, 1319