A124324
Sequences linked to this entry ?
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A124324: Triangle read by rows: T(n,k) is the number of partitions of an n-set having k blocks of size > 1 (0<=k<=floor(n/2)).
identification, match triangle
1 · 1 · 1, 1 · 1, 4 … Σ 1, 1, 2, 5, 15, 52, 203, 877, …