%I #10 Jun 30 2021 03:57:00

%S 39,93,139,193,239,293,309,319,329,349,359,369,379,389,390,391,392,

%T 394,395,396,397,398,439,493,539,593,639,693,739,793,839,893,903,913,

%U 923,930,931,932,934,935,936,937,938,943,953,963,973,983,1039,1093

%N Numbers whose base-10 representation has the same nonzero number of 3's and 9's.

%K nonn,base,easy

%O 1,1

%A _Olivier Gérard_