A304252
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.
-
A081581 → γ
(match triangle)
1 · 1 · 1, 6 · 1, 12 … row sums 1, 1, 7, 13, 55, 133, 463, 1261, …