Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 3,1 4,0 5,0 polyhexes in any orientation on a planar nXnXn triangular grid.
A155328
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 3,1 4,0 5,0 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =45a(4) =200a(5) =827a(6) =3807a(7) =19771a(8) =133675a(9) =1067815a(10) =10084717a(11) =113366836a(12) =1442256377
External references
- oeis: A155328