A045095 - OEIS

%I #9 May 16 2023 22:05:42

%S 5,17,20,23,29,53,65,68,71,77,80,83,92,95,113,116,119,125,197,209,212,

%T 215,221,245,257,260,263,269,272,275,284,287,305,308,311,317,320,323,

%U 332,335,368,371,380,383,449,452,455,461,464

%N Numbers whose base-4 representation contains exactly two 1's and no 2's.

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_