Number of 3-dimensional lattice paths running from (0,0,0) to (n,n,n), lying in {(x,y,z) : 0<=x<=y<=z} and using the steps (1,0,0), (0,1,0), (0,0,1), (1,1,0), (1,0,1), (0,1,1), (1,1,1).
A088594
Number of 3-dimensional lattice paths running from (0,0,0) to (n,n,n), lying in {(x,y,z) : 0<=x<=y<=z} and using the steps (1,0,0), (0,1,0), (0,0,1), (1,1,0), (1,0,1), (0,1,1), (1,1,1).
Terms
- a(0) =1a(1) =4a(2) =44a(3) =788a(4) =18372a(5) =505156a(6) =15553372a(7) =520065572a(8) =18518471492a(9) =692900847812
External references
- oeis: A088594