Reverse and add (in binary) - written in base 10.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =18a(6) =27a(7) =54a(8) =81a(9) =150a(10) =255a(11) =510a(12) =765a(13) =1530a(14) =2295a(15) =6120a(16) =6885a(17) =12240a(18) =13005a(19) =24480a(20) =25245a(21) =48960a(22) =49725a(23) =97920a(24) =98685a(25) =196224a(26) =197757a(27) =392448a(28) =393981a(29) =785664