mirror
/
RosettaCodeData
mirror of https://github.com/acmeism/RosettaCodeData.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
RosettaCodeData/Task/Permutations-Derangements/Mathematica/permutations-derangements.math

6 lines
171 B
Plaintext
Raw Permalink Blame History

Needs["Combinatorica`"]
derangements[n_] := Derangements[Range[n]]
derangements[4]
Table[{NumberOfDerangements[i], Subfactorial[i]}, {i, 9}] // TableForm
Subfactorial[20]
Reference in New Issue View Git Blame Copy Permalink