A Note On Reflection-Free Permutation Enumeration CACM November, 1977 Roy, M. K. permutations, reflection-free generation 5.30 CA771108 JB December 27, 1977 7:17 AM 2044 4 2908 2189 4 2908 2417 4 2908 2505 4 2908 2874 4 2908 2908 4 2908 2908 4 2908 2908 4 2908 3115 4 2908 2505 5 2908 2884 5 2908 2908 5 2908 2908 5 2908 2908 5 2908 521 5 2908