A045843 - OEIS

%I #5 May 18 2013 16:49:24

%S 1,0,1,0,1,0,1,0,1,0,2,0,2,0,2,0,2,0,2,0,3,2,2,2,4,2,4,2,4,2,2,0,2,0,

%T 2,0,2,0,2,0,3,2,4,2,2,2,4,2,4,2,2,0,2,0,2,0,2,0,2,0,3,2,4,2,4,2,2,2,

%U 4,2,2,0,2,0,2,0,2,0,2,0,3,2,4,2,4,2,4,2,2,2,2,0,2,0,2,0,2,0,2,0

%N Number of distinct even numbers formed from the digits of n.

%e a(24)=4 because we can form 2, 4, 24 and 42.

%K nonn,base,easy

%O 0,11

%A _Felice Russo_

%E Extended and corrected by _Erich Friedman_.