sec(cos(x)-cosh(x)) = 1+12/4!*x^4+8512/8!*x^8+41692992/12!*x^12...

A013480

sec(cos(x)-cosh(x)) = 1+12/4!*x^4+8512/8!*x^8+41692992/12!*x^12...

Terms

    a(0) =1a(1) =12a(2) =8512a(3) =41692992a(4) =748457181952

External references