A144696
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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A144696: Triangle of 2-Eulerian numbers.
(identification, match triangle)
1 · 1, 2 · 1, 7, 4 · 1, 18, 33, 8 … row sums 1, 3, 12, 60, 360, 2520, 20160, 181440, …