-726781835

Appears in sequences

• Expansion of e.g.f.: log(1+tanh(x)*cos(x)).at n=13A009394
• E.g.f.: arctan(cosh(x)*tan(x))=x+3/3!*x^3-35/5!*x^5-1057/7!*x^7+59865/9!*x^9...at n=6A012767
• Expansion of e.g.f. log(sec(x) + tanh(x)).at n=13A013199