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A045032 Numbers n with property that in base 4 representation the numbers of 0's and 1's are 3 and 4, respectively. 1

%I

%S 4117,4165,4177,4180,4357,4369,4372,4417,4420,4432,5125,5137,5140,

%T 5185,5188,5200,5377,5380,5392,5440,16470,16471,16473,16477,16485,

%U 16501,16533,16597,16662,16663,16665,16669,16677,16693

%N Numbers n with property that in base 4 representation the numbers of 0's and 1's are 3 and 4, respectively.

%H Vincenzo Librandi, <a href="/A045032/b045032.txt">Table of n, a(n) for n = 1..2000</a>

%t Select[Range[10000], DigitCount[#, 4, 0] == 3 && DigitCount[#, 4, 1] == 4 &] (* _Vincenzo Librandi_, Sep 23 2016 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified March 4 05:41 EST 2021. Contains 341779 sequences. (Running on oeis4.)