Period 2: repeat (4,10).

Terms

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