1307377domain: NAppears in sequencesa(n) = Sum_{k = 0..n} C(n,k) * C(n+k,k) * C(n+2*k,k).at n=5A081798Duplicate of A081798.at n=5A082487Number A(n,k) of lattice paths from {n}^k to {0}^k using steps that decrement one component or all components by 1; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=41A229142