A144441
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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A144441: Triangle T(n,k) read by rows: T(n, k) = (4*n-4*k+1)*T(n-1, k-1) + (4*k-3)*T(n-1, k) + 4*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.
(identification, match reversed triangle, match triangle)
1 · 1, 1 · 1, 14, 1 · 1, 83, 83, 1 … row sums 1, 2, 16, 168, 2416, 44160, 981184, …