Period 2: repeat (5,10).

Terms

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