there are only 3 iterations this is how Sierpinski's (3D) triangle would look if viewed from above. If you were to view one from above or just look at this project, you can see that to make it, you just need to draw squares slowly getting smaller but closer and in between them, square slowly getting bigger and closer. The growing squares become the base for the next ones. This is not how it would actually look though as there are only 3 iterations because infinite iterations is impossible to make.
