Periodic sequence: Repeat 2,6.

Terms

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