Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155345
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =52a(4) =193a(5) =781a(6) =3781a(7) =20901a(8) =131341a(9) =1017012a(10) =9065243a(11) =91925870
External references
- oeis: A155345