Sums of 2 distinct powers of 8.

Terms

a(0) =9a(1) =65a(2) =72a(3) =513a(4) =520a(5) =576a(6) =4097a(7) =4104a(8) =4160a(9) =4608a(10) =32769a(11) =32776a(12) =32832a(13) =33280a(14) =36864a(15) =262145a(16) =262152a(17) =262208a(18) =262656a(19) =266240a(20) =294912a(21) =2097153a(22) =2097160a(23) =2097216a(24) =2097664a(25) =2101248a(26) =2129920a(27) =2359296a(28) =16777217a(29) =16777224