%I #11 May 21 2023 12:27:37
%S 1,4,6,9,16,18,24,26,33,36,38,41,64,66,72,74,96,98,104,106,129,132,
%T 134,137,144,146,152,154,161,164,166,169,256,258,264,266,288,290,296,
%U 298,384,386,392,394,416,418,424,426,513,516,518
%N Numbers whose base-4 representation contains exactly one 1 and no 3's.
%Y Cf. A007090.
%K nonn,base
%O 1,2
%A _Clark Kimberling_