Numbers whose set of base-16 digits is {1,2}.

Terms

a(0) =1a(1) =2a(2) =17a(3) =18a(4) =33a(5) =34a(6) =273a(7) =274a(8) =289a(9) =290a(10) =529a(11) =530a(12) =545a(13) =546a(14) =4369a(15) =4370a(16) =4385a(17) =4386a(18) =4625a(19) =4626a(20) =4641a(21) =4642a(22) =8465a(23) =8466a(24) =8481a(25) =8482a(26) =8721a(27) =8722a(28) =8737a(29) =8738