A221453
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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A026729 → basis A008277
(match row sums)
1 · 1, 1 · 2, 4, 1 · 3, 13, 8, 1 … row sums 1, 2, 7, 25, 102, 456, 2219, 11640, …