A105793
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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A105793: Expansion of e.g.f. (1 + y)^(1 + x).
(identification, match triangle)
A028338 → x ↦ −2x−31 · 1, 1 · 0, 1, 1 · 0, -1, 0, 1 … row sums 1, 2, 2, 0, 0, 0, 0, 0, …