Period 2: repeat [3,10].

Terms

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