%I #5 Mar 30 2012 18:35:28
%S 1,3,6,11,17,25,34,45,57,70,85,101,119,138,159,181,204,229,255,283,
%T 312,343,375,408,443,479,517,556,597,639,682,727,773,821,870,921,973,
%U 1026,1081,1137,1195,1254,1315,1377,1440,1505,1571,1639,1708,1779,1851,1924
%N Index of 10^n within sequence of numbers of form 5^i*10^j.
%K nonn
%O 1,2
%A _David W. Wilson_
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