A100381
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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A237765: Triangular array read by rows: T(n,k) = binomial(n,2)*binomial(n,k), n>=0, 0<=k<=n.
(match row sums)
A007318 → ×(−(1/2)n+(1/2)n²)1, 2, 1 · 3, 9, 9, 3 · 6, 24, 36, 24, 6 … row sums 0, 0, 4, 24, 96, 320, 960, 2688, …