arctan(sin(x)-sinh(x)) = -2/3!*x^3 - 2/7!*x^7 + 4480/9!*x^9 - 2/11!*x^11 + ...

A013372

arctan(sin(x)-sinh(x)) = -2/3!*x^3 - 2/7!*x^7 + 4480/9!*x^9 - 2/11!*x^11 + ...

Terms

    a(0) =-2a(1) =0a(2) =-2a(3) =4480a(4) =-2a(5) =274560a(6) =-1076275202a(7) =20650240a(8) =-595948953602

External references