85135050domain: NAppears in sequencesTriangular sequence from coefficients of the polynomial recursion: p(x,n)=Sum[Binomial[n, m]*p[x, m]*p[x, n - m - 1], {m, 0, n - 1}].at n=31A157526Number of rooted binary phylogenetic trees with n leaves and minimal Sackin tree balance index.at n=12A344934