A043515 Numbers having three 6's in base 10.

666, 1666, 2666, 3666, 4666, 5666, 6066, 6166, 6266, 6366, 6466, 6566, 6606, 6616, 6626, 6636, 6646, 6656, 6660, 6661, 6662, 6663, 6664, 6665, 6667, 6668, 6669, 6676, 6686, 6696, 6766, 6866, 6966, 7666, 8666, 9666, 10666

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• Jens Kruse Andersen, Table of n, a(n) for n = 1..1000

Programs

Mathematica

Select[Range[0, 10^7], DigitCount[#, 10, 6]==3&] (* Vincenzo Librandi, Sep 25 2017 *)