17-4 step prism

The 17-4 step prism is a convex isogonal polychoron, member of the step prism family. It has 17 tetragonal disphenoids and 68 phyllic disphenoids of two kinds as cells.

Vertex coordinates
Coordinates for the vertices of a 17-4 step prism of circumradius $\sqrt{2}$ are given by: where k is an integer from 0 to 16.
 * (sin(2πk/17), cos(2πk/17), sin(8πk/17), cos(8πk/17)),