A102662
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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A102662: Triangle read by rows: T(1,1)=1,T(2,1)=1,T(2,2)=3, T(k-1,r-1)+T(k-1,r)+T(k-2,r-1).
(identification, match triangle)
1 · 1, 3 · 1, 5, 3 · 1, 7, 11, 3 … row sums 1, 4, 9, 22, 53, 128, 309, 746, …
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A102662 → reverse
(match reversed triangle)
1 · 3, 1 · 3, 5, 1 · 3, 11, 7, 1 … row sums 1, 4, 9, 22, 53, 128, 309, 746, …