Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 3,2 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155270
Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 3,2 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =241a(5) =1393a(6) =11002a(7) =99401a(8) =1043872a(9) =13453795a(10) =226833102a(11) =4837029282a(12) =127481277055
External references
- oeis: A155270