A190973
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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A125662 → x ↦ x/(x+1)
(match row sums)
1 · 3, 4 · 8, 22, 15 · 21, 88, 122, 56 … row sums 1, 7, 45, 287, 1829, 11655, 74269, …