1st iteration of the Sierpinski Tetrahedron - with an octahedron at the center.
The octahedron serves as "core".
Attached to that octahedron core are 4 tetrahedra.
Modules used: 24
[ 12 for the octahedron, 4x3 for the 4 tetrahedral tips ]
If I attach 4 more tetrahedral tips - so that all faces of the octahedron are stellated - it would turn into a stellated octahedron/stella octangula.

















