A375041
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 A007318
(match reversed triangle)
1 · 1, 1 · 2, 3, 1 · 10, 17, 8, 1 … row sums 1, 2, 6, 36, 396, 7128, 192456, …