Sequence A115774 in binary.

Terms

a(0) =0a(1) =101a(2) =1010a(3) =10100a(4) =10101a(5) =101000a(6) =101010a(7) =1010000a(8) =1010100a(9) =1010101a(10) =10100000a(11) =10101000a(12) =10101010a(13) =101000000a(14) =101010000a(15) =101010100a(16) =101010101a(17) =1010000000a(18) =1010000101a(19) =1010100000a(20) =1010101000a(21) =1010101010a(22) =10100000000