739328

Appears in sequences

• Generalized tangent numbers d_(n,3).at n=7A000488
• Generalized tangent number d(8,n).at n=2A064073
• Irregular triangle read by rows: T(n,k) = number of 2-packed n X n matrices with exactly k nonzero entries (0 <= k <= n^2).at n=25A230878
• Generalized Euler numbers, a(n) = n!*[x^n](sec(8*x)*2*(sin(4*x) + cos(4*x))).at n=5A349267