A086871
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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A114655 → x ↦ x/(x+1)
(match row sums)
2 · 4, 6 · 8, 28, 22 · 16, 96, 168, 90 … row sums 2, 10, 58, 370, 2514, 17850, 130890, …