A045148 - OEIS

%I #12 May 21 2023 12:24:28

%S 42,106,138,154,162,166,168,169,298,362,394,410,418,422,424,425,522,

%T 538,546,550,552,553,586,602,610,614,616,617,642,646,648,649,658,662,

%U 664,665,672,673,676,677,1066,1130,1162,1178,1186

%N Numbers whose base-4 representation contains exactly three 2's and no 3's.

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_