A004213
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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A075497 → x ↦ x/(x+1)
(match row sums)
1 · 2, 3 · 4, 14, 11 · 8, 52, 92, 49 … row sums 1, 5, 29, 201, 1657, 15821, 170389, …
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Stirling2 triangle with scaled diagonals (powers of 4).
(match row sums)
16, 12, 1 · 64, 112, 24, 1 · 256, 960, 400, 40, 1 … row sums 29, 201, 1657, 15821, 170389, 2032785, …