A013623
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.
-
A038255 → basis A013609
(match reversed triangle)
1 · 7, 2 · 49, 28, 4 · 343, 294, 84, 8 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …