-2886735625domain: ZAppears in sequencesCoefficient of x of the OmegaPolynomials (A318146), T(n, k) = [x] P(n, k) with n>=1 and k>=0, square array read by ascending antidiagonals.at n=40A318253a(n) = [x] OmegaPolynomial(5, n). OmegaPolynomials are defined in A318146.at n=4A318258