A026000

Sequences linked to this entry ?

• A357613: Triangle read by rows T(n, k) = binomial(2*n, k) * binomial(3*n - k, 2*n). match row sums
  1 · 3, 2 · 15, 20, 6 · 84, 168, 105, 20 … Σ 1, 5, 41, 377, 3649, 36365, 369305, …
  (−∞, 0)nonnegative