A229277
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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A120909 → θ+1
(match row sums)
3 · 3, 12 · 3, 24, 36 · 3, 36, 108, 96 … row sums 3, 15, 63, 243, 891, 3159, 10935, …
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A120909 → D+1
(match row sums)
3 · 9, 6 · 15, 36, 12 · 21, 90, 108, 24 … row sums 3, 15, 63, 243, 891, 3159, 10935, …