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A045032
Numbers whose base-4 representation contains exactly three 0's and four 1's.
1
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
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
KEYWORD
nonn,base
STATUS
approved