A043499 - OEIS

%I #17 Aug 23 2021 13:46:33

%S 222,1222,2022,2122,2202,2212,2220,2221,2223,2224,2225,2226,2227,2228,

%T 2229,2232,2242,2252,2262,2272,2282,2292,2322,2422,2522,2622,2722,

%U 2822,2922,3222,4222,5222,6222,7222,8222,9222,10222,11222,12022,12122,12202,12212

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

%H Daniel Starodubtsev, <a href="/A043499/b043499.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[13000],DigitCount[#,10,2]==3&] (* _Harvey P. Dale_, Aug 23 2021 *)

%Y Subsequence of A011532.

%K nonn,base

%O 1,1

%A _Clark Kimberling_