A288470
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.
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A086645 → ⊙ C(n+1,k) (shift +2)
(match row sums)
1, 12, 1 · 1, 45, 45, 1 · 1, 112, 420, 112, 1 … row sums 14, 92, 646, 4652, 34124, 253528, …