But where the issue comes up is if that's not clear. Patents are supposed to put people on notice of what is--and conversely, what is not--free for others to use. Here, by using the word "integer", which has a very precise and definite meaning in math and science, that conveys certain information.
Part of the problem with the current state of our patent laws is that claims are not clear and the public isn't on notice of what the patent owners are claiming. This discussion is a good example of that. If the patent owner was clear in what they meant, would we be having this discussion. Would the patent owner itself have claimed that "n=1" infringes if it was clear that n>=2?
Mathematics precisely defines the term "integer." Mathematics also provides quick and easy ways to exclude "1". None of that was done here, to the detriment of the public's notice of when they were infringing.
Patents, despite how esoteric they have become, are ostensibly written for those with skill in the art. If we're all having problems understanding what, exactly, the patent owner meant (including the patent owner!) there's a problem.
*edited for clarity