Numbers k whose ordered binary weights (A000120) of their divisors are the numbers 1 to A000005(k).

Terms

a(0) =1a(1) =3a(2) =5a(3) =17a(4) =25a(5) =39a(6) =57a(7) =69a(8) =145a(9) =201a(10) =257a(11) =265a(12) =289a(13) =291a(14) =323a(15) =393a(16) =579a(17) =1075a(18) =1083a(19) =2307a(20) =2645a(21) =2875a(22) =4205a(23) =4503a(24) =5555a(25) =5593a(26) =7955a(27) =8815a(28) =9399a(29) =9401