-5904domain: ZAppears in sequencesE.g.f. A(x) satisfies A(x) = 1 + 2 * x * A(log(1+x)).at n=6A355104Dirichlet inverse of function f(n) = 1+(A003415(n)*A276086(n)), where A003415 is the arithmetic derivative and A276086 is the primorial base exp-function.at n=15A359603