A038244

View A038244 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.

• A013620 → x ↦ x/(x+1) (match reversed triangle)
  1 · 2, 5 · 4, 20, 25 · 8, 60, 150, 125 … row sums 1, 7, 49, 343, 2401, 16807, 117649, …
  [−1, 0] nonnegative rational roots
• A038220 → basis A007318 (match triangle)
  1 · 5, 2 · 25, 20, 4 · 125, 150, 60, 8 … row sums 1, 7, 49, 343, 2401, 16807, 117649, …
  (−∞, −1] nonnegative rational roots