A045032 Numbers whose base-4 representation contains exactly three 0's and four 1's.

4117, 4165, 4177, 4180, 4357, 4369, 4372, 4417, 4420, 4432, 5125, 5137, 5140, 5185, 5188, 5200, 5377, 5380, 5392, 5440, 16470, 16471, 16473, 16477, 16485, 16501, 16533, 16597, 16662, 16663, 16665, 16669, 16677, 16693

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..2000

Mathematica

Select[Range[10000], DigitCount[#, 4, 0] == 3 && DigitCount[#, 4, 1] == 4 &] (* Vincenzo Librandi, Sep 23 2016 *)

Crossrefs

Cf. A007090.

Sequence in context: A061325 A043677 A168462 * A196896 A210312 A125502

Adjacent sequences: A045029 A045030 A045031 * A045033 A045034 A045035

Keyword

nonn,base

Author

Clark Kimberling

Status

approved