Period 2: repeat (7,8).

Terms

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