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

A155369

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

Terms

    a(0) =1a(1) =4a(2) =10a(3) =22a(4) =40a(5) =103a(6) =496a(7) =3099a(8) =16980a(9) =88897a(10) =547244a(11) =4508233a(12) =48937458a(13) =595010305a(14) =7745612856a(15) =114311761273

External references