A352880
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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A352880: Triangle read by rows: T(n,k) = number of vertices of degree k in an origami flip graph OFG(A2n).
(identification, match triangle)
A007318 → ⊙ C(n+1,k+1) (shift +2)8 · 12, 18 · 16, 64, 32 · 20, 150, 200, 50 … row sums 8, 30, 112, 420, 1584, 6006, 22880, …
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A007318 → ⊙ C(n+1,k+1) (shift +2) → reverse
(match reversed triangle)
8 · 18, 12 · 32, 64, 16 · 50, 200, 150, 20 … row sums 8, 30, 112, 420, 1584, 6006, 22880, …