A043417 Numbers whose base-7 representation contains exactly one 6.

6, 13, 20, 27, 34, 41, 42, 43, 44, 45, 46, 47, 55, 62, 69, 76, 83, 90, 91, 92, 93, 94, 95, 96, 104, 111, 118, 125, 132, 139, 140, 141, 142, 143, 144, 145, 153, 160, 167, 174, 181, 188, 189, 190, 191, 192, 193, 194, 202, 209, 216, 223

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Crossrefs

Cf. A007093.

Programs

Mathematica

Select[Range[300],DigitCount[#,7,6]==1&] (* Harvey P. Dale, Dec 26 2018 *)