A249250
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.
-
A249250: Triangular array: row n gives the coefficients of the polynomial p(n,x) defined in Comments.
(identification, match triangle)
1 · 1, 3 · 1, 6, 3 · 1, 9, 15, 3 … row sums 1, 4, 10, 28, 76, 208, 568, 1552, …
-
A249250 → reverse
(match reversed triangle)
1 · 3, 1 · 3, 6, 1 · 3, 15, 9, 1 … row sums 1, 4, 10, 28, 76, 208, 568, 1552, …