Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.

A155234

Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =13a(2) =37a(3) =73a(4) =777a(5) =9141a(6) =72173a(7) =857297a(8) =18077297a(9) =462703693a(10) =12835269909a(11) =499538698537

External references