A012771 exp(cosh(x)*arcsinh(x))=1+x+1/2!*x^2+3/3!*x^3+9/4!*x^4+25/5!*x^5...

1, 1, 1, 3, 9, 25, 105, 371, 1393, 11985, 71025, -13981, -898887, 45127017, 455252889, -5553908333, -75822681503, 1415759895841, 21366754787169, -404022487469117, -7036035942040855, 148035510590478137