Sequence A115817 in binary.

Terms

a(0) =0a(1) =101a(2) =1010a(3) =1111a(4) =10100a(5) =11110a(6) =101000a(7) =101101a(8) =111100a(9) =1001111a(10) =1010000a(11) =1011010a(12) =1111000a(13) =10011110a(14) =10100000a(15) =10100101a(16) =10110100a(17) =11101101a(18) =11110000a(19) =100111100a(20) =101000000a(21) =101000101a(22) =101001010a(23) =101100101a(24) =101101000a(25) =111011010a(26) =111100000a(27) =1001111000a(28) =1010000000