Reading binary expansion from right to left, run lengths strictly decrease.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =7a(5) =8a(6) =15a(7) =16a(8) =24a(9) =31a(10) =32a(11) =39a(12) =48a(13) =63a(14) =64a(15) =79a(16) =96a(17) =112a(18) =127a(19) =128a(20) =143a(21) =159a(22) =192a(23) =224a(24) =255a(25) =256a(26) =287a(27) =319a(28) =384a(29) =399