A069996
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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A007318 → ×(1+2n+n²) → x ↦ x+1
(match row sums)
1 · 8, 4 · 36, 36, 9 · 128, 192, 96, 16 … row sums 1, 12, 81, 432, 2025, 8748, 35721, …
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A007318 → ×(1+2n+n²) → x ↦ x/(x+1)
(match row sums)
1 · 4, 8 · 9, 36, 36 · 16, 96, 192, 128 … row sums 1, 12, 81, 432, 2025, 8748, 35721, …