Prime numbers concatenated with 45.

Terms

a(0) =245a(1) =345a(2) =545a(3) =745a(4) =1145a(5) =1345a(6) =1745a(7) =1945a(8) =2345a(9) =2945a(10) =3145a(11) =3745a(12) =4145a(13) =4345a(14) =4745a(15) =5345a(16) =5945a(17) =6145a(18) =6745a(19) =7145a(20) =7345a(21) =7945a(22) =8345a(23) =8945a(24) =9745a(25) =10145a(26) =10345a(27) =10745a(28) =10945a(29) =11345