Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155320
Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =28a(4) =129a(5) =586a(6) =2176a(7) =14358a(8) =112046a(9) =791851a(10) =8217946a(11) =101868365a(12) =1252862099a(13) =20806137393
External references
- oeis: A155320