Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155229
Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =19a(4) =54a(5) =346a(6) =1831a(7) =9221a(8) =66079a(9) =717157a(10) =8272905a(11) =104484553a(12) =1712695513a(13) =36940968544a(14) =931841300560
External references
- oeis: A155229