A075508
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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Stirling2 triangle with scaled diagonals (powers of 9).
(match row sums)
81, 27, 1 · 729, 567, 54, 1 … row sums 109, 1351, 19612, 333451, 6493069, …