634756203018domain: NAppears in sequencesCoordination sequence for A_13 lattice.at n=13A035839a(n) = Sum_{i=0..n} C(n+1,i)*C(n-1,i-1)*C(2n-i,n).at n=13A103882Number of integer sequences of length n+1 with sum zero and sum of absolute values 26.at n=12A157062