Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,2 4,3 5,4 5,5 polyhexes in any orientation on a planar nXnXn triangular grid.
A155421
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,2 4,3 5,4 5,5 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) =618a(7) =2255a(8) =11708a(9) =67218a(10) =421461a(11) =2956054a(12) =24412206a(13) =225564175
External references
- oeis: A155421