Binary expansion contains a single 0.

Terms

a(0) =0a(1) =2a(2) =5a(3) =6a(4) =11a(5) =13a(6) =14a(7) =23a(8) =27a(9) =29a(10) =30a(11) =47a(12) =55a(13) =59a(14) =61a(15) =62a(16) =95a(17) =111a(18) =119a(19) =123a(20) =125a(21) =126a(22) =191a(23) =223a(24) =239a(25) =247a(26) =251a(27) =253a(28) =254a(29) =383