Period 2: repeat (3,9).

Terms

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