A035469
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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A035469: Triangle read by rows, the Bell transform of the triple factorial numbers A007559(n+1) without column 0.
(identification, match triangle)
1 · 4, 1 · 28, 12, 1 · 280, 160, 24, 1 … row sums 1, 5, 41, 465, 6721, 117941, 2433145, …
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A371080: Triangle read by rows: BellMatrix(Product_{p in P(n)} p), where P(n) = {k : k mod m = 1 and 1 <= k <= m*(n + 1)} and m = 3.
(match triangle)
basis-map coefficients of A371080, shifted → x ↦ x−1 → basis A0082771 · 0, 1 · 0, 4, 1 · 0, 28, 12, 1 … row sums 1, 1, 5, 41, 465, 6721, 117941, …