A144697
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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A144697: Triangle of 3-Eulerian numbers.
(identification, match triangle)
1 · 1, 3 · 1, 10, 9 · 1, 25, 67, 27 … row sums 1, 4, 20, 120, 840, 6720, 60480, …