A039411 - OEIS

%I #11 Jun 30 2021 03:58:05

%S 24,42,124,142,204,214,234,240,241,243,245,246,247,248,249,254,264,

%T 274,284,294,324,342,402,412,420,421,423,425,426,427,428,429,432,452,

%U 462,472,482,492,524,542,624,642,724,742,824,842,924,942,1024,1042

%N Numbers whose base-10 representation has the same nonzero number of 2's and 4's.

%K nonn,base,easy

%O 1,1

%A _Olivier Gérard_