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A039147 Numbers whose base-10 representation has the same number of 5's and 7's. 0

%I #13 Jun 26 2021 01:52:25

%S 0,1,2,3,4,6,8,9,10,11,12,13,14,16,18,19,20,21,22,23,24,26,28,29,30,

%T 31,32,33,34,36,38,39,40,41,42,43,44,46,48,49,57,60,61,62,63,64,66,68,

%U 69,75,80,81,82,83,84,86,88,89,90,91,92,93,94,96,98,99,100,101,102

%N Numbers whose base-10 representation has the same number of 5's and 7's.

%t Select[Range[0,110],DigitCount[#,10,5]==DigitCount[#,10,7]&] (* _Harvey P. Dale_, Jul 26 2011 *)

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_

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Last modified July 15 02:08 EDT 2024. Contains 374323 sequences. (Running on oeis4.)