Numbers whose binary expansion does not contain 101.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =7a(7) =8a(8) =9a(9) =12a(10) =14a(11) =15a(12) =16a(13) =17a(14) =18a(15) =19a(16) =24a(17) =25a(18) =28a(19) =30a(20) =31a(21) =32a(22) =33a(23) =34a(24) =35a(25) =36a(26) =38a(27) =39a(28) =48a(29) =49