Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155259
Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =13a(2) =37a(3) =111a(4) =999a(5) =5261a(6) =42873a(7) =550367a(8) =5937880a(9) =97204725a(10) =2096426420a(11) =47838274736
External references
- oeis: A155259