permutation-numbers
There are 3 repositories under permutation-numbers topic.
Eidonko/Permutation-feed-povray
Creates a PovRay source code to create a 3D representation of a permutation number (see Permutation-numbers)
Eidonko/Permutation-numbers
Permutations can be considered as the orbits of a dynamic system p' = succ(p), where p is a permutation and p' is its successor in the lexycographically ordered set of permutations (plus the Nil permutation, whose successor is Nil). Here I present a function that produces those orbits as well as a number of "permutation numbers" derived from those orbits.
tigertv/superpermutation
Generator of superpermutations