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A344437
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Regular triangle read by rows, T(n,k) is the number of derangements of [n] with exactly k right-to-left minima, for n >= 2 and 1 <= k <= n-1.
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2
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1, 1, 1, 3, 5, 1, 11, 21, 11, 1, 53, 113, 79, 19, 1, 309, 715, 589, 211, 29, 1, 2119, 5235, 4835, 2141, 461, 41, 1, 16687, 43507, 43831, 22357, 6175, 883, 55, 1, 148329, 404699, 437079, 247549, 80531, 15161, 1541, 71, 1, 1468457, 4165965, 4765971, 2931193, 1074701, 242617, 33067, 2509, 89, 1
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OFFSET
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2,4
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LINKS
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FORMULA
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EXAMPLE
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1;
1, 1;
3, 5, 1;
11, 21, 11, 1;
53, 113, 79, 19, 1;
309, 715, 589, 211, 29, 1;
2119, 5235, 4835, 2141, 461, 41, 1;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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