A185411

View A185411 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.

• A185411: A triangular decomposition of the double factorial numbers A001147. (identification, match triangle)
  A185410 → reverse
  1 · 0, 1 · 0, 2, 1 · 0, 4, 10, 1 … row sums 1, 1, 3, 15, 105, 945, 10395, 135135, …
  A185411 (−∞, 0] nonnegative