A176479

Sequences linked to this entry ?

• A386789: Triangle read by rows: T(n, k) = binomial(n - 1, k - 1)*binomial(n + k, k). match row sums
  1 · 0, 2 · 0, 3, 6 · 0, 4, 20, 20 … Σ 1, 2, 9, 44, 225, 1182, 6321, 34232, …
  (−∞, 0]nonnegative