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A008970 Triangle T(n,k) = P(n,k)/2, n >= 2, 1<=k<n, of one-half of number of permutations of 1..n such that the differences have k runs with the same signs. +0
10
1, 1, 2, 1, 6, 5, 1, 14, 29, 16, 1, 30, 118, 150, 61, 1, 62, 418, 926, 841, 272, 1, 126, 1383, 4788, 7311, 5166, 1385, 1, 254, 4407, 22548, 51663, 59982, 34649, 7936, 1, 510, 13736, 100530, 325446, 553410, 517496, 252750, 50521, 1, 1022, 42236 (list; table; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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