-18261468225domain: ZAppears in sequencesexp(arcsinh(arcsinh(x))) = 1+x+1/2!*x^2-1/3!*x^3-7/4!*x^4+9/5!*x^5...at n=15A012252Row 2 of array in A288580.at n=13A092396E.g.f. log(1 + sin(arctan(x))).at n=15A191011