A045001 - OEIS

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A045001

Numbers whose base-3 representation contains exactly two 0's and two 2's.

%I #10 Jul 25 2023 22:27:58

%S 56,60,72,89,101,105,137,141,153,167,169,173,177,181,183,191,195,207,

%T 217,219,225,260,266,268,278,290,294,302,304,308,312,316,318,332,344,

%U 348,380,384,396,410,412,416,420,424,426,434

%N Numbers whose base-3 representation contains exactly two 0's and two 2's.

%t Select[Range[500],DigitCount[#,3,0]==DigitCount[#,3,2]==2&] (* _Harvey P. Dale_, Mar 10 2017 *)

%Y Cf. A007089.

%K nonn,base

%O 1,1

%A _Clark Kimberling_