Reverse and add (in binary).

Terms

a(0) =1a(1) =10a(2) =11a(3) =110a(4) =1001a(5) =10010a(6) =11011a(7) =110110a(8) =1010001a(9) =10010110a(10) =11111111a(11) =111111110a(12) =1011111101a(13) =10111111010a(14) =100011110111