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A086854 Number of permutations of length n with exactly 3 rising or falling successions. +0
6
0, 0, 0, 0, 2, 16, 120, 888, 7198, 64968, 650644, 7165200, 86059242, 1119549472, 15682257872, 235336043976, 3766695159030, 64052134910168, 1153211148654348, 21915344800505888, 438380075974889154, 9207290871553008240, 202585136417883766472, 4659950328485470292632 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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