Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,0 5,1 6,1 polyhexes in any orientation on a planar n X n X n triangular grid.
A155414
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,0 5,1 6,1 polyhexes in any orientation on a planar n X n X n triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =52a(4) =254a(5) =1049a(6) =4097a(7) =19919a(8) =121609a(9) =822616a(10) =6525958a(11) =61351204
External references
- oeis: A155414