A044965 Numbers with no two equally numerous base 16 digits.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 256, 257, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 289, 290, 305, 307, 321, 324, 337, 341, 353, 358, 369, 375

Offset

1,2

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Mathematica

A044965Q[k_] := DuplicateFreeQ[Tally[IntegerDigits[k, 16]][[All, 2]]];
Select[Range[500], A044965Q] (* Paolo Xausa, Oct 27 2025 *)

Crossrefs

Sequence in context: A032512 A050723 A017908 * A044827 A048313 A043719

Adjacent sequences: A044962 A044963 A044964 * A044966 A044967 A044968

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Paolo Xausa, Oct 27 2025

Status

approved