Not an animation, like I usually pass along to you $4+ folk, but nevertheless it's a preview to a structure that the coming video(s) will include. This particular image is just a zoomed out, very high resolution version of the structure, so the stroke witdths are all super thin, but you should be able to zoom in to see what's going on.
3blue1brown
2016-11-22 23:17:54 +0000 UTCPéter Mernyei
2016-11-22 16:28:19 +0000 UTCPéter Mernyei
2016-11-22 16:27:48 +0000 UTC