A386789
Sequences linked to this entry ?
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A386789: Triangle read by rows: T(n, k) = binomial(n - 1, k - 1)*binomial(n + k, k).
identification, match triangle
1 · 0, 2 · 0, 3, 6 · 0, 4, 20, 20 … Σ 1, 2, 9, 44, 225, 1182, 6321, 34232, …