How many topological sortings are there of a DAG G such that G is a fully connected neural network with layers of width 3, 2, and 1?
I would think the answer would be 3! * 2! * 1!, since any sorting without elements of the layer together would violate the definition of a topological sort--there would be a directed edge u → v, but v would be before u.
However, I have been told that this is too small...