-13038080

Appears in sequences

• sin(arctan(x)*tan(x))=2/2!*x^2+40/6!*x^6-2688/8!*x^8-31712/10!*x^10...at n=5A012445
• arcsinh(arctan(x)*tan(x))=2/2!*x^2+40/6!*x^6-2688/8!*x^8+210208/10!*x^10...at n=5A012450