%I #11 Jun 25 2021 01:41:42
%S 0,1,2,3,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,26,27,28,29,30,
%T 32,33,35,43,45,46,47,48,50,51,53,54,55,56,57,59,60,62,67,72,73,74,75,
%U 77,78,80,81,82,83,84,86,87,89,90,91,92,93,95,96,98,99,100,101,102
%N Numbers whose base-9 representation has the same number of 4's and 7's.
%Y Cf. A007095.
%K nonn,base,easy
%O 1,3
%A _Olivier GĂ©rard_
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