A000225

Sequences linked to this entry ?

• A131436: Triangle read by rows, (n-1) zeros followed by 2^n - 1. match row sums
  1 · 0, 3 · 0, 0, 7 · 0, 0, 0, 15 … Σ 1, 3, 7, 15, 31, 63, 127, 255, …
  (−∞, 0]nonnegativerational roots