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

A155224

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

Terms

    a(0) =1a(1) =4a(2) =13a(3) =28a(4) =111a(5) =977a(6) =7280a(7) =55365a(8) =714096a(9) =13471597a(10) =269297226a(11) =6772718447a(12) =245090678582

External references