Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155240
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =208a(5) =1905a(6) =20926a(7) =172576a(8) =1900996a(9) =35023141a(10) =893053190a(11) =24012955958a(12) =788590457332
External references
- oeis: A155240