a(n) is A143905(n) written in binary.

Terms

a(0) =1001a(1) =10011001a(2) =10100101a(3) =11000011a(4) =100011110001a(5) =100101101001a(6) =100110011001a(7) =101001100101a(8) =101010010101a(9) =101100001101a(10) =110001100011a(11) =110010010011a(12) =110100001011a(13) =111000000111