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A043500 Numbers having four 2's in base 10. 2

%I

%S 2222,12222,20222,21222,22022,22122,22202,22212,22220,22221,22223,

%T 22224,22225,22226,22227,22228,22229,22232,22242,22252,22262,22272,

%U 22282,22292,22322,22422,22522,22622,22722,22822,22922

%N Numbers having four 2's in base 10.

%H Daniel Starodubtsev, <a href="/A043500/b043500.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[30000],DigitCount[#,10,2]==4&] (* _Harvey P. Dale_, Oct 05 2012 *)

%Y Cf. A043496.

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified September 22 07:48 EDT 2021. Contains 347605 sequences. (Running on oeis4.)