A039299 Numbers whose base-6 representation has the same nonzero number of 1's and 3's.

9, 19, 39, 51, 54, 56, 58, 59, 63, 69, 81, 91, 109, 114, 116, 118, 119, 121, 133, 139, 153, 163, 189, 199, 219, 231, 234, 236, 238, 239, 243, 249, 273, 291, 303, 306, 308, 310, 311, 315, 321, 324, 326, 328, 329, 333, 336, 338, 340, 341, 343, 348, 350, 352

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[400], DigitCount[#, 6, 1]==DigitCount[#, 6, 3]>0&] (* Harvey P. Dale, Oct 17 2025 *)

Crossrefs

Cf. A007092.

Sequence in context: A297396 A145958 A290245 * A211114 A159697 A014005

Adjacent sequences: A039296 A039297 A039298 * A039300 A039301 A039302

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved