Period 2: repeat (6,10).

Terms

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