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Numbers whose base-4 representation contains exactly one 0 and four 2's.
0

%I #11 Jun 27 2023 16:16:15

%S 554,650,674,680,1194,1578,1674,1698,1704,2154,2202,2214,2217,2219,

%T 2222,2234,2282,2346,2442,2466,2472,2586,2598,2601,2603,2606,2618,

%U 2634,2658,2664,2694,2697,2699,2702,2706,2712,2721

%N Numbers whose base-4 representation contains exactly one 0 and four 2's.

%t Select[Range[3000],DigitCount[#,4,0]==1&&DigitCount[#,4,2]==4&] (* _Harvey P. Dale_, Jun 27 2023 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_