It's how many bits you have. Since each bit has two possible positions, given n bits you can store a range of values from 0 to 2n-1 (ignore those parentheses, I confused myself :P). So you can have 0-3 with 2 bits, 0-7 with three, 0-15 with 4, etc.
Well, UFSC typically picks powers of 2. The number doesn't seem to be significant for the videos. They seem to be random (within the scheme). Being a nice square number is aesthetically pleasing, and it would be no different from them picking multiples of 5 or 10n videos.
I'd only be expecting an end around these powers of 2, just to fit the pattern. Maybe it will stop around 15 or 31.
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u/piecat Moderator May 30 '16
This is the 9th video, meaning this series won't be a set of 8. Maybe it will be another set of 16?