A226506
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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A008277 → θ+1 → D
(match row sums)
2 · 6, 6 · 14, 36, 12 · 30, 150, 120, 20 … row sums 0, 2, 12, 62, 320, 1712, 9604, 56674, …