A196347
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.
-
A196347: Triangle T(n, k) read by rows, T(n, k) = n!*binomial(n, k).
(identification, match reversed triangle, match triangle)
1 · 1, 1 · 2, 4, 2 · 6, 18, 18, 6 … row sums 1, 2, 8, 48, 384, 3840, 46080, 645120, …