Period 2: repeat (5,9).

Terms

a(0) =5a(1) =9a(2) =5a(3) =9a(4) =5a(5) =9a(6) =5a(7) =9a(8) =5a(9) =9a(10) =5a(11) =9a(12) =5a(13) =9a(14) =5a(15) =9a(16) =5a(17) =9a(18) =5a(19) =9a(20) =5a(21) =9a(22) =5a(23) =9a(24) =5a(25) =9a(26) =5a(27) =9a(28) =5a(29) =9