Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 3,1 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155357
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 3,1 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =209a(5) =927a(6) =4735a(7) =37071a(8) =286745a(9) =2579963a(10) =31707495a(11) =434469270a(12) =7173015390a(13) =147194484531
External references
- oeis: A155357