63882940domain: NAppears in sequencesNinth column (m=8) of (1,6)-Pascal triangle A096956.at n=28A09729910th column of Catalan triangle A009766.at n=18A124088a(n) = binomial(4*n,n)*(2*n+1)/(3*n+1).at n=9A126596Central terms of the triangle in A208101.at n=18A208983Number of standard Young tableaux of shape [9n,9].at n=3A215549