601585512domain: NAppears in sequencesCoordination sequence for A_10 lattice.at n=10A008395a(n) = Sum_{i=0..n} C(n+1,i)*C(n-1,i-1)*C(2n-i,n).at n=10A103882Number of integer sequences of length n+1 with sum zero and sum of absolute values 20.at n=9A157059