Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155286
Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =97a(5) =706a(6) =9275a(7) =70904a(8) =406991a(9) =3864451a(10) =77404600a(11) =1807280192a(12) =33936037037a(13) =736180071815
External references
- oeis: A155286