sec(sec(x)*arcsinh(x))=1+1/2!*x^2+13/4!*x^4+445/6!*x^6+24953/8!*x^8...
A012832
sec(sec(x)*arcsinh(x))=1+1/2!*x^2+13/4!*x^4+445/6!*x^6+24953/8!*x^8...
Terms
- a(0) =1a(1) =1a(2) =13a(3) =445a(4) =24953a(5) =2394425a(6) =320731013a(7) =61303017269
External references
- oeis: A012832