A038332
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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A038221 → basis A013611
(match reversed triangle)
1 · 6, 12 · 36, 144, 144 · 216, 1296, 2592, 1728 … row sums 1, 18, 324, 5832, 104976, 1889568, …