Subject-verb inversion when subject isn't clear

I just felt like writing the following sentence:

n^k distinct configurations has a 2dfa(k).

It’s natural formulation would be "a 2dfa(k) has n^k distinct configurations", but its after 2AM, and I guess I felt fancy. My question is, is the above sentence in blockquote alright?

My suspicion arose due to "n^k distinct configurations" not having any syntactical indication that it is not the subject, and "2dfa(k)" instead is. Maybe, I thought, one should avoid subject-verb inversions even more in such sentences.