Number of paths on the surface of the n-dimensional lattice [0..2]^n; i.e., the lattice paths that do not pass through the point (1,1,...,1).

A071798

Number of paths on the surface of the n-dimensional lattice [0..2]^n; i.e., the lattice paths that do not pass through the point (1,1,...,1).

Terms

    a(0) =0a(1) =2a(2) =54a(3) =1944a(4) =99000a(5) =6966000a(6) =655678800a(7) =80103945600

External references