A069321
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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A131689 → D
(match row sums)
1 · 1, 4 · 1, 12, 18 · 1, 28, 108, 96 … row sums 0, 1, 5, 31, 233, 2071, 21305, 249271, …