-2075domain: ZAppears in sequencesarcsinh(sin(arcsinh(x)))=x-3/3!*x^3+49/5!*x^5-2075/7!*x^7+168865/9!*x^9...at n=3A012040Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} sigma(n) * x^n, where sigma = A000203.at n=41A328776a(n) = exp(-1) * Sum_{k>=0} (k*(k - n))^n / k!.at n=5A340823