Number of ways to place zero or more nonadjacent 1,1 2,1 2,2 3,1 4,0 4,1 5,1 polyhexes in any orientation on a planar nXnXn triangular grid.

A155319

Number of ways to place zero or more nonadjacent 1,1 2,1 2,2 3,1 4,0 4,1 5,1 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =162a(5) =682a(6) =2796a(7) =19279a(8) =139378a(9) =1039172a(10) =10455828a(11) =121464277a(12) =1566433989a(13) =25757470951

External references