A043711 Numbers whose base-8 representation has an odd number of runs.

1, 2, 3, 4, 5, 6, 7, 9, 18, 27, 36, 45, 54, 63, 65, 66, 67, 68, 69, 70, 71, 73, 80, 81, 83, 84, 85, 86, 87, 88, 89, 90, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 108, 110, 111, 112, 113, 114, 115, 116, 117, 119, 120

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Programs

Mathematica

Select[Range[150],OddQ[Length[Split[IntegerDigits[#,8]]]]&] (* Harvey P. Dale, Jul 07 2025 *)