A049398
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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A137320 → basis A013611
(match row sums)
1 · 2, 8 · 6, 40, 64 · 24, 208, 576, 512 … row sums 1, 10, 110, 1320, 17160, 240240, …
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A257607: Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 5.
(match row sums)
1 · 5, 5 · 25, 60, 25 · 125, 535, 535, 125 … row sums 1, 10, 110, 1320, 17160, 240240, …