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

A155249

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

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =14a(5) =47a(6) =195a(7) =837a(8) =3369a(9) =18578a(10) =136739a(11) =1165320a(12) =10402584a(13) =111016225a(14) =1486854375a(15) =24007190141a(16) =439055546197

External references