#4213: Bug in Permutations(n, k)
---------------------------+------------------------------------------------
 Reporter:  anakha         |       Owner:  mhansen   
     Type:  defect         |      Status:  new       
 Priority:  major          |   Milestone:  sage-3.1.3
Component:  combinatorics  |    Keywords:            
---------------------------+------------------------------------------------
 {{{
 sage: list(Permutations([1,2,3,4,5], 4))

 [ ...
  [2, 3, 1, 5],
  [2, 3, 3, 1],
  [2, 3, 3, 4],
  [2, 3, 3, 5],
  [2, 3, 4, 1],
  ...
  [3, 2, 1, 5],
  [3, 2, 2, 1],
  [3, 2, 2, 4],
  [3, 2, 2, 5],
  [3, 2, 4, 1],
  ...
  [4, 2, 1, 5],
  [4, 2, 2, 1],
  [4, 2, 2, 3],
  [4, 2, 2, 5],
  [4, 2, 3, 1],
  ...
  [5, 2, 1, 4],
  [5, 2, 2, 1],
  [5, 2, 2, 3],
  [5, 2, 2, 4],
  [5, 2, 3, 1],
 }}}

 Only the buggy parts are shown.

 This does not occur for lists smaller that 5 or when len(n) == k.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4213>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of 
Reinventing the Wheel
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