A375043
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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A269944 → basis A013609
(match reversed triangle)
1 · 1, 2 · 2, 6, 4 · 10, 34, 32, 8 … row sums 1, 3, 12, 84, 1008, 19152, 536256, …