A045144 - OEIS

%I #11 Apr 22 2023 20:30:11

%S 43,46,58,107,110,122,139,142,155,158,163,167,172,173,178,182,184,185,

%T 202,218,226,230,232,233,299,302,314,363,366,378,395,398,411,414,419,

%U 423,428,429,434,438,440,441,458,474,482,486

%N Numbers whose base-4 representation contains exactly two 2's and one 3.

%t Select[Range[500],DigitCount[#,4,2]==2&&DigitCount[#,4,3]==1&]  (* _Harvey P. Dale_, Mar 24 2011 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_