Numbers m with the property that its k-th smallest divisor, for all 1 <= k <= tau(m), contains exactly k "1" digits in its binary representation.

A255401

Numbers m with the property that its k-th smallest divisor, for all 1 <= k <= tau(m), contains exactly k "1" digits in its binary representation.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =17a(4) =25a(5) =39a(6) =57a(7) =201a(8) =257a(9) =289a(10) =291a(11) =323a(12) =393a(13) =579a(14) =1083a(15) =2307a(16) =7955a(17) =8815a(18) =9399a(19) =12297a(20) =12909a(21) =13737a(22) =36867a(23) =40521a(24) =43797a(25) =50349a(26) =65537a(27) =66049a(28) =66291a(29) =66531

External references