A271114
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.
-
A023531 → 2D+1+2n → x ↦ x/(x+1)
(match row sums)
1 · 2, 5 · 0, 4, 9 · 0, 0, 6, 13 … row sums 1, 7, 13, 19, 25, 31, 37, 43, …