A054444
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.
-
A054142 → D
(match row sums)
1 · 3, 2 · 5, 12, 3 · 7, 30, 30, 4 … row sums 0, 1, 5, 20, 71, 235, 744, 2285, …