(see also
Knotinfo, Knotserver).
The simplest type of endless or eternal knot
Symmetry D4, period 2, strongly invertible
List (of coordinates along the path)
Fourier series (of coordinate functions parametrized in [-π,π])
Scad file (for use in Openscad or similar compiler)
Stl file (for use in a 3D printer)
List of knots, table of symmetries
6.7.15