A075497
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: Stirling2 triangle with scaled diagonals (powers of 2).
(identification, match triangle)
1 · 2, 1 · 4, 6, 1 · 8, 28, 12, 1 … row sums 1, 3, 11, 49, 257, 1539, 10299, 75905, …
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A075497 → reverse
(match reversed triangle)
1 · 1, 2 · 1, 6, 4 · 1, 12, 28, 8 … row sums 1, 3, 11, 49, 257, 1539, 10299, 75905, …