Numbers n such that 2^n does not contain the digit 8 (probably finite).

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =5a(5) =6a(6) =8a(7) =9a(8) =10a(9) =12a(10) =16a(11) =17a(12) =18a(13) =21a(14) =22a(15) =24a(16) =25a(17) =32a(18) =40a(19) =41a(20) =49a(21) =52a(22) =53a(23) =56a(24) =73a(25) =78