222285domain: NAppears in sequencesNumber of tournaments on n nodes determined by their score vectors.at n=24A000570Triangular array read by rows. T(n,k) is the number of inequivalent (as defined below) transitive binary relations R on [n] such that |domain(R intersect R^(-1))| = k, n>=0, 0<=k<=n.at n=31A369776