sec(arcsinh(x)*cos(x))=1+1/2!*x^2-11/4!*x^4-35/6!*x^6+7817/8!*x^8...
A012644
sec(arcsinh(x)*cos(x))=1+1/2!*x^2-11/4!*x^4-35/6!*x^6+7817/8!*x^8...
Terms
- a(0) =1a(1) =1a(2) =-11a(3) =-35a(4) =7817a(5) =-79975a(6) =-36304963a(7) =2699226933a(8) =396427182993
External references
- oeis: A012644