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A045094 Numbers n with property that in base 4 representation the numbers of 1's and 2's are 1 and 4, respectively. 0

%I

%S 426,618,666,678,681,1194,1578,1674,1698,1704,1707,1710,1722,1770,

%T 1962,2154,2202,2214,2217,2346,2442,2466,2472,2475,2478,2490,2538,

%U 2586,2598,2601,2634,2658,2664,2667,2670,2682,2694

%N Numbers n with property that in base 4 representation the numbers of 1's and 2's are 1 and 4, respectively.

%t Select[Range[3000],DigitCount[#,4,1]==1&&DigitCount[#,4,2]==4&] (* _Harvey P. Dale_, Jun 07 2019 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified March 4 04:39 EST 2021. Contains 341779 sequences. (Running on oeis4.)