A002698
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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A034870 → (θ+1)²
(match row sums)
1 · 1, 8, 9 · 1, 16, 54, 64, 25 … row sums 1, 18, 160, 1120, 6912, 39424, 212992, …