A086645
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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A086645: Triangle read by rows: T(n, k) = binomial(2n, 2k).
(identification, match reversed triangle, match triangle)
1 · 1, 1 · 1, 6, 1 · 1, 15, 15, 1 … row sums 1, 2, 8, 32, 128, 512, 2048, 8192, …
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A034870 → Veronese 2
(match reversed triangle, match triangle)
1 · 1, 1 · 1, 6, 1 · 1, 15, 15, 1 … row sums 1, 2, 8, 32, 128, 512, 2048, 8192, …