A039175 Numbers whose base-11 representation has the same number of 2's and 4's.

0, 1, 3, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 17, 18, 19, 20, 21, 26, 33, 34, 36, 38, 39, 40, 41, 42, 43, 46, 55, 56, 58, 60, 61, 62, 63, 64, 65, 66, 67, 69, 71, 72, 73, 74, 75, 76, 77, 78, 80, 82, 83, 84, 85, 86, 87, 88, 89, 91, 93, 94, 95, 96, 97, 98, 99, 100, 102, 104

Offset

1,3

Links

Table of n, a(n) for n=1..69.

Mathematica

okQ[n_]:=Module[{dc11=DigitCount[n, 11]}, dc11[[2]]==dc11[[4]]]
Select[Range[0, 120], okQ]  (* Harvey P. Dale, Feb 19 2011 *)

Crossrefs

Sequence in context: A299489 A039231 A194387 * A048293 A039129 A194370

Adjacent sequences: A039172 A039173 A039174 * A039176 A039177 A039178

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved