22634496

Appears in sequences

• Generalized class numbers c_(n,3).at n=7A000508
• Generalized Euler number c(8,n).at n=3A064069
• Generalized Euler numbers, a(n) = n!*[x^n](sec(8*x)*2*(sin(4*x) + cos(4*x))).at n=6A349267