Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.

A155304

Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =13a(2) =37a(3) =73a(4) =309a(5) =2413a(6) =28415a(7) =205131a(8) =1898471a(9) =29029014a(10) =631146446a(11) =14579044094a(12) =368315888227

External references