A081278
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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A038207 → (θ+1)²
(match row sums)
1 · 2, 4 · 4, 16, 9 · 8, 48, 54, 16 … row sums 1, 6, 29, 126, 513, 1998, 7533, 27702, …
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A007318 → (θ+1)² → x ↦ x/(x+1)
(match row sums)
1 · 1, 5 · 1, 10, 18 · 1, 15, 54, 56 … row sums 1, 6, 29, 126, 513, 1998, 7533, 27702, …