Period 2: repeat (0,7).

Terms

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