3339504032domain: NAppears in sequencesNumber of points of L1 norm 10 in cubic lattice Z^n.at n=20A035604Coordination sequence for 20-dimensional cubic lattice.at n=10A035715Coordination sequence for C_20 lattice.at n=5A035757a(n) = Sum_{k=0..n} binomial(2*n,k) * binomial(3*n-k-1,n-k).at n=10A370099