a(1)=1. For m >= 0 and 1 <= k <= 2^m, a(2^m +k) = a(k) + Sum_{j=1..2^m} a(j).

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =13a(5) =14a(6) =16a(7) =17a(8) =73a(9) =74a(10) =76a(11) =77a(12) =85a(13) =86a(14) =88a(15) =89a(16) =721a(17) =722a(18) =724a(19) =725a(20) =733a(21) =734a(22) =736a(23) =737a(24) =793a(25) =794a(26) =796a(27) =797a(28) =805a(29) =806