A044971 Numbers whose base-3 representation contains exactly one 0 and one 1.

3, 11, 15, 19, 21, 35, 47, 51, 59, 61, 65, 69, 73, 75, 107, 143, 155, 159, 179, 185, 187, 197, 209, 213, 221, 223, 227, 231, 235, 237, 323, 431, 467, 479, 483, 539, 557, 563, 565, 593, 629, 641, 645, 665, 671, 673, 683, 695, 699

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Crossrefs

Cf. A007089.

Programs

Mathematica

Select[Range[1000],DigitCount[#,3,0]==DigitCount[#,3,1]==1&] (* Harvey P. Dale, Aug 06 2017 *)