A000281
Sequences linked to this entry ?
-
A151775: Triangle read by rows: T(n,k) = value of (d^2n/dx^2n) (tan^(2k)(x)/cos(x)) at the point x = 0.
match row sums
1 · 1, 2 · 5, 28, 24 · 61, 662, 1320, 720 … Σ 1, 3, 57, 2763, 250737, 36581523, …