A199572
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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A130123 → Veronese 2
(match row sums)
1 · 0, 4 · 0, 0, 16 · 0, 0, 0, 64 … row sums 1, 0, 4, 0, 16, 0, 64, 0, …