A221954
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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A085881 → basis A013611
(match row sums)
1 · 2, 4 · 12, 48, 48 · 120, 720, 1440, 960 … row sums 1, 6, 108, 3240, 136080, 7348320, …