29529753

Appears in sequences

• Expansion of e.g.f. exp(sec(x)*arcsinh(x)).at n=12A012821
• cosh(sec(x)*arcsinh(x))=1+1/2!*x^2+9/4!*x^4+225/6!*x^6+6993/8!*x^8...at n=6A012831