A142706
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.
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A173018 → D
(match triangle)
1 · 4, 2 · 11, 22, 3 · 26, 132, 78, 4 … row sums 0, 0, 1, 6, 36, 240, 1800, 15120, …
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A008292 → D
(match triangle)
1 · 4, 2 · 11, 22, 3 · 26, 132, 78, 4 … row sums 0, 1, 6, 36, 240, 1800, 15120, 141120, …
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A257609 → D (shift +2)
(tail)
11, 22, 3 · 26, 132, 78, 4 · 57, 604, 906, 228, 5 … row sums 36, 240, 1800, 15120, 141120, 1451520, …