A284864
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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A225466: Triangle read by rows, 3^k*S_3(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.
(match row sums)
1 · 2, 3 · 4, 21, 9 · 8, 117, 135, 27 … row sums 1, 5, 34, 287, 2839, 31898, 399079, …