Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 4,0 4,1 5,2 6,3 7,4 polyhexes in any orientation on a planar nXnXn triangular grid.
A155391
Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 4,0 4,1 5,2 6,3 7,4 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =106a(5) =313a(6) =1348a(7) =6817a(8) =32547a(9) =189413a(10) =1214982a(11) =8891593a(12) =78525607a(13) =761546216
External references
- oeis: A155391