Not sure I need that but I was curious to test out and found that with 'n' higher than that the first address doesn't change.
Also when trying to make a big file I've found it working very slow. Uses only 4 threads (or maybe 2 cores). Thought the drive may be the problem but ram drive doesn't make any change.
Would be nice (and code simple I guess) to make the output file parted for such experiments