-44415

Appears in sequences

• Expansion of e.g.f.: sech(arctanh(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+45/4!*x^4-300/5!*x^5...at n=8A013166
• Coefficient of x^(2n+1)/(2n+1)! in arctan(arcsin(x)-arctan(x))=3/3!*x^3-15/5!*x^5+945/7!*x^7-44415/9!*x^9...at n=4A013410