A038246

View A038246 at the OEIS

identification: the entry's rule defines the sequence for every index; tail: the sequence is the entry's tail after some prefix rows; match_*: finite agreement only.

• A038231 → x ↦ x/(x+1) (match reversed triangle)
  1 · 4, 5 · 16, 40, 25 · 64, 240, 300, 125 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …
  [−1, 0] nonnegative rational roots
• A013611 → basis A007318 (match triangle)
  1 · 5, 4 · 25, 40, 16 · 125, 300, 240, 64 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …
  (−∞, −1] nonnegative rational roots