A013624
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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A038255 → basis A013610
(match reversed triangle)
1 · 7, 3 · 49, 42, 9 · 343, 441, 189, 27 … row sums 1, 10, 100, 1000, 10000, 100000, …