A167924
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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A147716 → Pₙ + Pₙ₊₁
(match row sums)
15, 1 · 210, 29, 1 · 2940, 616, 43, 1 … row sums 16, 240, 3600, 54000, 810000, 12150000, …