Sierpinski Pyramid Fractal with 1 iteration on each face.

(update - fixed my typo Serpinski to Sierpinski - my thanks to user who pointed this out).
This is a Sierpinski Pyramid with 4 Triangle faces. Each face adds an iteration of the
Sierpinski Triangle fractal.

Face 1 = solid
Face 2 = 3 solid triangles, 1 hole triangle
Face 3 = 9 solid triangles, 4 hole triangles
Face 4 = 27 solid triangles, 13 hole triangles

Added Optional "SerpinskiPyramidConnectors01.stl" file to help glue these together to continue the iterations.

(Optional) T