A004253
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.
-
A165253 → basis A013609
(match row sums)
1 · 1 · 2, 2 · 5, 10, 4 … row sums 1, 1, 4, 19, 91, 436, 2089, 10009, …