Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
A155343
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =22a(4) =55a(5) =192a(6) =702a(7) =3882a(8) =23422a(9) =155527a(10) =1170160a(11) =10636314a(12) =113496925a(13) =1456900734a(14) =21993819116
External references
- oeis: A155343