A108666
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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A104684 → D
(match row sums)
1 · 6, 2 · 30, 24, 3 · 140, 180, 60, 4 … row sums 0, 1, 8, 57, 384, 2505, 16008, 100849, …