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

A155245

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

Terms

    a(0) =1a(1) =7a(2) =25a(3) =70a(4) =416a(5) =2481a(6) =24212a(7) =281815a(8) =3600076a(9) =66159319a(10) =1542429625a(11) =45797988541

External references