A167876
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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A028338 → x ↦ −2x−3 → Pₙ + Pₙ₊₁
(match row sums)
2, 1 · 1, 2, 1 · 0, 0, 1, 1 · 0, 1, -1, -1, 1 … row sums 3, 4, 2, 0, 0, 0, 0, 0, …