Number of ways to place zero or more nonadjacent (0,0) (1,0) (1,1) (2,0) (3,1) (4,0) (4,1) (5,1) polyhexes in any orientation on a planar n X n X n triangular grid.
A155367
Number of ways to place zero or more nonadjacent (0,0) (1,0) (1,1) (2,0) (3,1) (4,0) (4,1) (5,1) polyhexes in any orientation on a planar n X n X n triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =209a(5) =927a(6) =3227a(7) =19783a(8) =150961a(9) =985335a(10) =8837609a(11) =101553731a(12) =1116357221a(13) =14988545712
External references
- oeis: A155367