A162970
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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A100861 → D
(match row sums)
1 · 3 · 6, 6 · 10, 30 … row sums 0, 0, 1, 3, 12, 40, 150, 546, …