[jahewson]

Yes. While the computer program itself is a creative work, the important factor is that it is being used as a tool in an overall creative process. There are most likely aesthetic concerns which are contained in the program which are reflected in the output, meaning that it is not just a purely mathematical exercise. There may also have been some manual selection process in which the mazes were assessed for aesthetic quality - which counts as creative from a copyright standpoint, though this applies primarily to an overall work which is a compilation.

However, if the maze is entirely the product of a random process then the online compilation could be protected as a 'selective' creative work, but individual mazes would not.

Note that even if each individual maze is eligible for protection that the author doesn't end up with copyright over Fibonacci mazes, it's only the creative parts, whatever aesthetic tweaks (or manual selection in the case of a compilation) were made that is covered. So you could produce a very similar maze with your own program using your own creative decisions without infringing.