A090049 Length of longest contiguous block of 0's in binary expansion of n^3.

1, 0, 3, 1, 6, 1, 3, 1, 9, 2, 3, 2, 6, 3, 3, 2, 12, 3, 3, 2, 6, 4, 3, 4, 9, 4, 3, 3, 6, 3, 3, 3, 15, 4, 3, 2, 6, 3, 3, 2, 9, 4, 4, 2, 6, 3, 4, 3, 12, 3, 4, 6, 6, 3, 3, 3, 9, 2, 3, 4, 6, 2, 3, 4, 18, 5, 4, 2, 6, 6, 3, 4, 9, 2, 3, 2, 6, 1, 3, 4, 12, 6, 4, 3, 6, 2, 3, 5, 9, 5, 3, 3, 6, 6, 3, 3, 15, 4, 3