Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 4,3 5,4 5,5 6,4 polyhexes in any orientation on a planar nXnXn triangular grid.
A155428
Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 4,3 5,4 5,5 6,4 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =19a(4) =51a(5) =170a(6) =491a(7) =1673a(8) =7735a(9) =36917a(10) =181725a(11) =1063340a(12) =7115095a(13) =51066154a(14) =415590144a(15) =3918376915
External references
- oeis: A155428