A376716
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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A172431 → Veronese 2
(match row sums)
1 · 1 · 1, 3 · 1, 10 … row sums 1, 1, 4, 11, 27, 72, 189, 493, …