cosh(arctan(x)+tan(x))=1+4/2!*x^2+16/4!*x^4+544/6!*x^6+11008/8!*x^8...
A013006
cosh(arctan(x)+tan(x))=1+4/2!*x^2+16/4!*x^4+544/6!*x^6+11008/8!*x^8...
Terms
- a(0) =1a(1) =4a(2) =16a(3) =544a(4) =11008a(5) =1060224a(6) =38065152a(7) =9708670976a(8) =276991311872
External references
- oeis: A013006