Oh, and every one of those nodes also connects to an analogous node on another hypercube, but the nodes of different layers connect to different hypercubes so that each layer of activity is isolated except through paths to the central nodes and then out to a different layer.
Also, this is the corner of a 14x14x14 cube; in case that means anything. I was just trying to go as far as I could fit on a piece of paper.
