This pattern is formed arraying five non-regular pentagons on four sides of a square. The tips of these four pentagons define another square which is the base of this tiling.
Playing with the variables, some sub-patterns appear. Looking carefully, you can as well see demiregular tiling of irregular decagons.
Another grid of interlocking octagons
Pattern with the point attractor
Mapping onto a sphere
5_4_hyperbolic from caglar on Vimeo.
5_4 point attractor