A005012
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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Stirling2 triangle with scaled diagonals (powers of 6).
(match row sums)
36, 18, 1 · 216, 252, 36, 1 · 1296, 3240, 900, 60, 1 … row sums 55, 505, 5497, 69823, 1007407, …