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Exponent of 5 (value of i) in n-th number of form 5^i*10^j.
1

%I #5 Mar 30 2012 18:35:26

%S 0,1,0,2,1,0,3,2,1,4,0,3,2,5,1,4,0,3,6,2,5,1,4,7,0,3,6,2,5,8,1,4,7,0,

%T 3,6,9,2,5,8,1,4,7,10,0,3,6,9,2,5,8,11,1,4,7,10,0,3,6,9,12,2,5,8,11,1,

%U 4,7,10,0,13,3,6,9,12,2,5,8,11,1,14,4,7,10,0,13,3,6,9,12,2,15,5,8,11,1,14,4,7

%N Exponent of 5 (value of i) in n-th number of form 5^i*10^j.

%K nonn

%O 1,4

%A _David W. Wilson_