Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155261
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =353a(5) =2143a(6) =18201a(7) =203783a(8) =2290841a(9) =37082423a(10) =818768313a(11) =20744782567a(12) =698778878809
External references
- oeis: A155261