One of the most expressive uses of math for art is in the fractal. There are seemingly random shapes creating using mathematical equations. The shapes can change by a small change in one of many variables.
The universe is made up of many beautiful sights from quasars to stars, but they would never have been seen were it not for the creations of physicists. In many ways, mathematics and physics are art forms no different from sculpting and painting. Most great scientists and mathematicians are naturals and have a way of looking at the world that is a little different than everyone else.