-6698domain: ZAppears in sequencesThe y-axis intercept of the line y = n*x + b tangent to the curve y = prime(k), k = 1, 2, 3, ....at n=10A232879Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} sigma(n) * x^n, where sigma = A000203.at n=45A328776