Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 3,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155243
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 3,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =102a(5) =1264a(6) =9091a(7) =48176a(8) =418130a(9) =8182255a(10) =143523182a(11) =2278072430a(12) =53254810257
External references
- oeis: A155243