A096684 - OEIS

%I #3 Mar 30 2012 17:29:16

%S 5,25,185,125,1,925,715,625,61728395,5,5,4625,385,3575,37,3125,3265,

%T 308641975,2895,25,2405,25,23935,23125,2,1925,203909465,17875,189845,

%U 185,17905,15625,16835,16325,143,1543209875,15,14475,1295,125,1355

%N Least k such that decimal representation of k*n contains only digits 0 and 5.

%F a(n) = A078244(n)/n.

%Y Cf. A004290, A078241-A078248, A079339, A096681-A096688.

%K base,nonn

%O 1,1

%A _Ray Chandler_, Jul 12 2004