184465domain: NAppears in sequencesA symmetrical triangle sequence T(n, m) = 2 + binomial(n, m)^3 - 3*binomial(n, m)*Eulerian(n+1, m) + Eulerian(n+1, m)^3.at n=16A174914A symmetrical triangle sequence T(n, m) = 2 + binomial(n, m)^3 - 3*binomial(n, m)*Eulerian(n+1, m) + Eulerian(n+1, m)^3.at n=19A174914E.g.f. exp(x+x^4).at n=9A190875