-1323000domain: ZAppears in sequencesNumerators of bivariate Taylor expansion of the incomplete elliptic integral of the first kind.at n=19A272102E.g.f. A(x,k) satisfies: sn(A(x,k), k) = k * sn(x,k), where sn(,) and cn(,) are Jacobi Elliptic functions.at n=34A291527