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A001100 Triangle read by rows: T(n,k) = number of permutations of length n with exactly k rising or falling successions, for n >= 1, 0 <= k <= n-1. +0
9
1, 0, 2, 0, 4, 2, 2, 10, 10, 2, 14, 40, 48, 16, 2, 90, 230, 256, 120, 22, 2, 646, 1580, 1670, 888, 226, 28, 2, 5242, 12434, 12846, 7198, 2198, 366, 34, 2, 47622, 110320, 112820, 64968, 22120, 4448, 540, 40, 2, 479306, 1090270, 1108612, 650644, 236968, 54304, 7900, 748 (list; table; graph; listen)
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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