A032107
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.
-
A257609: 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) = 2*x + 2.
(match row sums)
1 · 2, 2 · 4, 16, 4 · 8, 88, 88, 8 … row sums 1, 4, 24, 192, 1920, 23040, 322560, …
-
A079638: Matrix product of unsigned Lah-triangle |A008297(n,k)| and unsigned Stirling1-triangle |A008275(n,k)|.
(match row sums)
1 · 3, 1 · 14, 9, 1 · 90, 83, 18, 1 … row sums 1, 4, 24, 192, 1920, 23040, 322560, …
-
A156992: Triangle T(n,k) = n!*binomial(n-1, k-1) for 1 <= k <= n, read by rows.
(match row sums)
1 · 2, 2 · 6, 12, 6 · 24, 72, 72, 24 … row sums 1, 4, 24, 192, 1920, 23040, 322560, …
-
A028338 → basis A013609
(match row sums)
1 · 2, 2 · 8, 12, 4 · 48, 88, 48, 8 … row sums 1, 4, 24, 192, 1920, 23040, 322560, …