A052704
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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A085880 → basis A013609
(match row sums)
1 · 2, 2 · 8, 16, 8 · 40, 120, 120, 40 … row sums 1, 4, 32, 320, 3584, 43008, 540672, …