%I #5 Mar 30 2012 18:35:26
%S 0,1,0,2,1,0,3,2,1,4,0,3,2,5,1,4,0,3,6,2,5,1,4,0,7,3,6,2,5,1,8,4,0,7,
%T 3,6,2,9,5,1,8,4,0,7,3,10,6,2,9,5,1,8,4,0,11,7,3,10,6,2,9,5,1,12,8,4,
%U 0,11,7,3,10,6,2,13,9,5,1,12,8,4,0,11,7,3,14,10,6,2,13,9,5,1,12,8,4,15,0,11,7,3
%N Exponent of 5 (value of i) in n-th number of form 5^i*9^j.
%K nonn
%O 1,4
%A _David W. Wilson_