arctan(tanh(x)*sinh(x))=2/2!*x^2-4/4!*x^4-178/6!*x^6+5336/8!*x^8...
A012693
arctan(tanh(x)*sinh(x))=2/2!*x^2-4/4!*x^4-178/6!*x^6+5336/8!*x^8...
Terms
- a(0) =2a(1) =-4a(2) =-178a(3) =5336a(4) =363002a(5) =-51606124a(6) =-2970605818
External references
- oeis: A012693