exp(tanh(x)*arctan(x))=1+2/2!*x^2-4/4!*x^4-40/6!*x^6+2704/8!*x^8...
A012676
exp(tanh(x)*arctan(x))=1+2/2!*x^2-4/4!*x^4-40/6!*x^6+2704/8!*x^8...
Terms
- a(0) =1a(1) =2a(2) =-4a(3) =-40a(4) =2704a(5) =-135392a(6) =6955456a(7) =-305645184a(8) =-7730286336
External references
- oeis: A012676