A128908

Sequences linked to this entry ?

• A128908: Riordan array (1, x/(1-x)^2). identification, match triangle
  1 · 0, 1 · 0, 2, 1 · 0, 3, 4, 1 … Σ 1, 1, 3, 8, 21, 55, 144, 377, …
  (−∞, 0]nonnegative