A136394
Sequences linked to this entry ?
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A136394: Triangle read by rows: T(n,k) is the number of permutations of an n-set having k cycles of size > 1 (0<=k<=floor(n/2)).
identification, match triangle
1 · 1 · 1, 1 · 1, 5 … Σ 1, 1, 2, 6, 24, 120, 720, 5040, …