Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155308
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =13a(2) =37a(3) =112a(4) =595a(5) =3710a(6) =30281a(7) =253489a(8) =2990675a(9) =42651723a(10) =721885534a(11) =15178835272
External references
- oeis: A155308