507867100

Appears in sequences

• cos(arcsinh(x)+arctan(x))=1-4/2!*x^2+40/4!*x^4-1030/6!*x^6+51160/8!*x^8...at n=6A013108
• Expansion of e.g.f.: exp(arctanh(x)+arcsin(x)).at n=12A013170