Smallest prime with memory = n.

Terms

a(0) =2a(1) =13a(2) =23a(3) =113a(4) =137a(5) =1237a(6) =1733a(7) =1373a(8) =12373a(9) =11317a(10) =23719a(11) =111317a(12) =113171a(13) =211373a(14) =1131379a(15) =1113173a(16) =1317971a(17) =2313797a(18) =11131733a(19) =11373379a(20) =23931379a(21) =113193797a(22) =52313797a(23) =129733313a(24) =113733797a(25) =523137971a(26) =1113179719a(27) =1317971939