A043322 Numbers having two 0's in base 3.

9, 18, 28, 29, 30, 33, 36, 45, 55, 56, 57, 60, 63, 72, 85, 86, 88, 89, 91, 92, 93, 96, 100, 101, 102, 105, 109, 110, 111, 114, 117, 126, 136, 137, 138, 141, 144, 153, 166, 167, 169, 170, 172, 173, 174, 177, 181, 182, 183, 186, 190, 191

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Crossrefs

Cf. A007089.

Programs

Mathematica

Select[Range[200],DigitCount[#,3,0]==2&] (* Harvey P. Dale, Dec 09 2021 *)