A030195

View A030195 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.

• A099093: Riordan array (1, 3+3x). (match row sums)
  1 · 0, 3 · 0, 3, 9 · 0, 0, 18, 27 … row sums 1, 3, 12, 45, 171, 648, 2457, 9315, …
  A099093 (−4/3, 0] nonnegative
• A099093 → reverse (match row sums)
  1 · 3 · 9, 3 · 27, 18 … row sums 1, 3, 12, 45, 171, 648, 2457, 9315, …
  (−∞, 0] nonnegative
• A026729 → basis A013609 (match row sums)
  1 · 1, 2 · 2, 6, 4 · 3, 14, 20, 8 … row sums 1, 3, 12, 45, 171, 648, 2457, 9315, …
  (−∞, 0] nonnegative
• A063967 → basis A007318 (match row sums)
  1 · 2, 1 · 6, 5, 1 · 16, 20, 8, 1 … row sums 1, 3, 12, 45, 171, 648, 2457, 9315, …
  (−∞, −1] nonnegative