a(n) = 2^n mod 11.

Terms

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