A049612

Sequences linked to this entry ?

• A124848: Triangle read by rows: T(n,k) = (k+1)*(k+2)*(k+3)*binomial(n,k)/6 (0 <= k <= n). match row sums
  1 · 1, 4 · 1, 8, 10 · 1, 12, 30, 20 … Σ 1, 5, 19, 63, 192, 552, 1520, 4048, …
  (−∞, 0)nonnegative