A227450
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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A227450: Triangular array read by rows. T(n,k) = A008277(n,k)*2^k; n >= 1, 1 <= k <= n.
(identification, match triangle)
2 · 2, 4 · 2, 12, 8 · 2, 28, 48, 16 … row sums 2, 6, 22, 94, 454, 2430, 14214, 89918, …
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A227450 → reverse
(match reversed triangle)
2 · 4, 2 · 8, 12, 2 · 16, 48, 28, 2 … row sums 2, 6, 22, 94, 454, 2430, 14214, 89918, …