A025636 Exponent of 2 (value of i) in n-th number of form 2^i*6^j.

0, 1, 2, 0, 3, 1, 4, 2, 5, 0, 3, 6, 1, 4, 7, 2, 5, 0, 8, 3, 6, 1, 9, 4, 7, 2, 10, 5, 0, 8, 3, 11, 6, 1, 9, 4, 12, 7, 2, 10, 5, 0, 13, 8, 3, 11, 6, 1, 14, 9, 4, 12, 7, 2, 15, 10, 5, 0, 13, 8, 3, 16, 11, 6, 1, 14, 9, 4, 17, 12, 7, 2, 15, 10, 5, 18, 0, 13, 8, 3, 16, 11, 6, 19, 1, 14, 9, 4, 17, 12, 7, 20, 2