A001791
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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A062196 → reverse
(match row sums)
1 · 3, 1 · 6, 8, 1 · 10, 30, 15, 1 … row sums 1, 4, 15, 56, 210, 792, 3003, 11440, …
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A062196: Triangle read by rows, T(n, k) = binomial(n, k)*binomial(n + 2, k).
(match row sums)
1 · 1, 3 · 1, 8, 6 · 1, 15, 30, 10 … row sums 1, 4, 15, 56, 210, 792, 3003, 11440, …
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A132812: Triangle read by rows, n>=1, 1<=k<=n, T(n,k) = k*binomial(n,k)^2/(n-k+1).
(match row sums)
1 · 2, 2 · 3, 9, 3 · 4, 24, 24, 4 … row sums 1, 4, 15, 56, 210, 792, 3003, 11440, …