285380domain: NAppears in sequencesNumber of meaningful differential operations of the n-th order on the space R^9.at n=16A090994O.g.f.: Sum_{n>=0} 5*n^n*(n+5)^(n-1) * exp(-n*(n+5)*x) * x^n / n!.at n=5A217904G.f. satisfies A(x) = 1 + x * A(x)^(5/2) * (1 + A(x)^(1/2))^2.at n=5A371677