A380977
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.
-
A131689 → θ+1
(match triangle)
1 · 0, 2 · 0, 2, 6 · 0, 2, 18, 24 … row sums 1, 2, 8, 44, 308, 2612, 25988, 296564, …