A167881
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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A007318 → Pₙ + Pₙ₊₁
(match row sums)
2, 1 · 2, 3, 1 · 2, 5, 4, 1 · 2, 7, 9, 5, 1 … row sums 3, 6, 12, 24, 48, 96, 192, 384, …