Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155293
Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =192a(5) =1118a(6) =8943a(7) =73694a(8) =651536a(9) =7389025a(10) =113816897a(11) =2201513666a(12) =49743400975
External references
- oeis: A155293