A290595
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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A290595: Triangle T(n, k) read by rows: row n gives the coefficients of the numerator polynomials of the o.g.f. of the (n+1)-th diagonal of the Sheffer triangle A286718 (|S1hat[3,1]| generalized Stir…
(identification, match triangle)
1 · 1, 2 · 4, 19, 4 · 28, 222, 147, 8 … row sums 1, 3, 27, 405, 8505, 229635, 7577955, …