tanh(tan(x)*sin(x))=2/2!*x^2+4/4!*x^4-178/6!*x^6-5336/8!*x^8...
A009815
tanh(tan(x)*sin(x))=2/2!*x^2+4/4!*x^4-178/6!*x^6-5336/8!*x^8...
Terms
- a(0) =0a(1) =2a(2) =4a(3) =-178a(4) =-5336a(5) =121082a(6) =24994924a(7) =661822982a(8) =-273928948016
External references
- oeis: A009815