A013124 arcsinh(tanh(x)+log(x+1))=2*x-1/2!*x^2-8/3!*x^3+18/4!*x^4+298/5!*x^5...

2, -1, -8, 18, 298, -1905, -25412, 350700, 4095754, -108856125, -940845072, 49635561030, 233977315570, -31129149144093, 12883816215268, 25437319822551000, -179134252641817006, -25989451309294893657