Digits of powers of 2.

Terms

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