Duplicate of A023747.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =7a(6) =8a(7) =9a(8) =12a(9) =13a(10) =14a(11) =18a(12) =19a(13) =24a(14) =31a(15) =32a(16) =33a(17) =34a(18) =37a(19) =38a(20) =39a(21) =43a(22) =44a(23) =49a(24) =62a(25) =63a(26) =64a(27) =68a(28) =69a(29) =74