Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
A155307
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =37a(4) =146a(5) =620a(6) =2737a(7) =17298a(8) =136979a(9) =1185666a(10) =12752003a(11) =161758550a(12) =2364549128a(13) =42702118766
External references
- oeis: A155307