A009974
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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A038335 → basis A007318
(match row sums)
1 · 21, 9 · 441, 378, 81 · 9261, 11907, 5103, 729 … row sums 1, 30, 900, 27000, 810000, 24300000, …