A207607
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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A207607: Triangle of coefficients of polynomials v(n,x) jointly generated with A207606; see Formula section.
(identification, match triangle)
1 · 1, 2 · 1, 5, 2 · 1, 9, 9, 2 … row sums 1, 3, 8, 21, 55, 144, 377, 987, …
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A207607 → reverse
(match reversed triangle)
1 · 2, 1 · 2, 5, 1 · 2, 9, 9, 1 … row sums 1, 3, 8, 21, 55, 144, 377, 987, …