Binary expansion starts 100.

Terms

a(0) =4a(1) =8a(2) =9a(3) =16a(4) =17a(5) =18a(6) =19a(7) =32a(8) =33a(9) =34a(10) =35a(11) =36a(12) =37a(13) =38a(14) =39a(15) =64a(16) =65a(17) =66a(18) =67a(19) =68a(20) =69a(21) =70a(22) =71a(23) =72a(24) =73a(25) =74a(26) =75a(27) =76a(28) =77a(29) =78