|An interpretation of species as exponential generating functions, which count labelled structures.|
Extract the coefficients of an exponential generating function as a list of Integers. Since EGF is an instance of Species, the idea is that labelled can be applied directly to an expression of the Species DSL. In particular, labelled s !! n is the number of labelled s-structures on an underlying set of size n. For example:
> take 10 $ labelled octopi [0,1,3,14,90,744,7560,91440,1285200,20603520]
gives the number of labelled octopi on 0, 1, 2, 3, ... 9 elements.
|Produced by Haddock version 2.6.0|