Number of ways to place zero or more nonadjacent 1,0 2,0 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
A155306
Number of ways to place zero or more nonadjacent 1,0 2,0 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =208a(5) =1168a(6) =8750a(7) =74240a(8) =701683a(9) =8051955a(10) =120548805a(11) =2289918377a(12) =52736906771
External references
- oeis: A155306