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

A155318

Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 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) =2862a(7) =19723a(8) =141397a(9) =1047499a(10) =10569960a(11) =123328797a(12) =1599865270a(13) =26321921029

External references