A196845
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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A136124 → basis A007318
(match reversed triangle)
1 · 3, 1 · 12, 7, 1 · 60, 47, 12, 1 … row sums 1, 4, 20, 120, 840, 6720, 60480, …