A087912
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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A331333: Interpolating the factorial and the powers of 2. Triangle read by rows, T(n, k) for 0 <= k <= n.
(match row sums)
A013609 → ⊙ 1/k!1 · 1, 2 · 2, 8, 4 · 6, 36, 36, 8 … row sums 1, 3, 14, 86, 648, 5752, 58576, 671568, …