A000583
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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A023531 → (θ+1)² → (θ+1)²
(match row sums)
1 · 0, 16 · 0, 0, 81 · 0, 0, 0, 256 … row sums 1, 16, 81, 256, 625, 1296, 2401, 4096, …