354343275

Appears in sequences

• E.g.f.: arcsinh(arctanh(x) - arcsin(x)) (odd powers only).at n=6A013435
• Expansion of e.g.f. exp(arctan(x)-arcsinh(x)) = 1-1/3!*x^3+15/5!*x^5+10/6!*x^6-495/7!*x^7...at n=13A013461