A108838
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.
-
A108838: Triangle of Dyck paths counted by number of long interior inclines.
(identification, match triangle)
2 · 3, 2 · 4, 8, 2 · 5, 20, 15, 2 … row sums 2, 5, 14, 42, 132, 429, 1430, 4862, …
-
A108838 → reverse
(match reversed triangle)
2 · 2, 3 · 2, 8, 4 · 2, 15, 20, 5 … row sums 2, 5, 14, 42, 132, 429, 1430, 4862, …