A025652 Exponent of 5 (value of i) in n-th number of form 5^i*7^j.

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