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A037409 Positive numbers having the same set of digits in base 2 and base 4. 1

%I

%S 1,4,16,17,20,64,65,68,69,80,81,84,256,257,260,261,272,273,276,277,

%T 320,321,324,325,336,337,340,1024,1025,1028,1029,1040,1041,1044,1045,

%U 1088,1089,1092,1093,1104,1105,1108,1109,1280,1281

%N Positive numbers having the same set of digits in base 2 and base 4.

%H John Cerkan, <a href="/A037409/b037409.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[1500],Union[IntegerDigits[#,2]]==Union[IntegerDigits[#,4]]&] (* _Harvey P. Dale_, Sep 14 2014 *)

%Y Subsequence of A000695.

%K nonn,base

%O 1,2

%A _Clark Kimberling_

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Last modified September 27 11:29 EDT 2021. Contains 347689 sequences. (Running on oeis4.)