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A096684
Least k such that decimal representation of k*n contains only digits 0 and 5.
2
5, 25, 185, 125, 1, 925, 715, 625, 61728395, 5, 5, 4625, 385, 3575, 37, 3125, 3265, 308641975, 2895, 25, 2405, 25, 23935, 23125, 2, 1925, 203909465, 17875, 189845, 185, 17905, 15625, 16835, 16325, 143, 1543209875, 15, 14475, 1295, 125, 1355
OFFSET
1,1
FORMULA
a(n) = A078244(n)/n.
KEYWORD
base,nonn
AUTHOR
Ray Chandler, Jul 12 2004
STATUS
approved