A391990

View A391990 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.

• A059344 → ⊙ 1/k! (shift -1) → θ+1 (match row sums)
  1 · 1 · 1, 4 · 1, 12 … row sums 1, 1, 5, 13, 43, 131, 411, 1275, …
  (−∞, 0] nonnegative
• A011973 → ⊙ C(n,k) → θ+1 (match row sums)
  1 · 1 · 1, 4 · 1, 12 … row sums 1, 1, 5, 13, 43, 131, 411, 1275, …
  (−∞, 0] nonnegative
• A011973 → ⊙ C(n,k) → D+1 (match row sums)
  1 · 1 · 3, 2 · 7, 6 … row sums 1, 1, 5, 13, 43, 131, 411, 1275, …
  (−∞, 0] nonnegative
• A059344 → ⊙ 1/k! (shift -1) → D+1 (match row sums)
  1 · 1 · 3, 2 · 7, 6 … row sums 1, 1, 5, 13, 43, 131, 411, 1275, …
  (−∞, 0] nonnegative