What do you call a paper that summarizes a set of mathematical formulas?
My comment turned into answer: you could call it an "expository paper", especially if it contains some more descriptive details on how/where to use/apply these formulas.

At least in my field (mathematics) such papers are not unheard of. These are often published in journals more aimed towards such papers with a broader audience, for example the American Mathematical Monthly or Expositiones Mathematicae. These papers can be of great value as a clear and easy reference to results in a particular field; on the other hand, they may not quite be considered research papers.