A004123
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 → x ↦ x+1
(match row sums)
1 · 1, 1 · 3, 5, 2 · 13, 31, 24, 6 … row sums 1, 2, 10, 74, 730, 9002, 133210, …