Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
A155258
Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =90a(4) =688a(5) =4109a(6) =25041a(7) =287360a(8) =3402527a(9) =48602011a(10) =1011814868a(11) =22922047752
External references
- oeis: A155258