241437105

Appears in sequences

• Expansion of e.g.f. log(1+tanh(x)/cosh(x)).at n=13A009401
• arctan(sec(x)*tan(x))=x+3/3!*x^3-15/5!*x^5-1197/7!*x^7-255/9!*x^9...at n=6A012796
• Expansion of e.g.f. log(cosh(x) + tanh(x)).at n=13A013191