%I #10 Jun 30 2021 03:56:53

%S 46,64,146,164,246,264,346,364,406,416,426,436,456,460,461,462,463,

%T 465,467,468,469,476,486,496,546,564,604,614,624,634,640,641,642,643,

%U 645,647,648,649,654,674,684,694,746,764,846,864,946,964,1046,1064

%N Numbers whose base-10 representation has the same nonzero number of 4's and 6's.

%K nonn,base,easy

%O 1,1

%A _Olivier Gérard_