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

A155405

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =61a(5) =179a(6) =1570a(7) =9884a(8) =43279a(9) =162911a(10) =1062503a(11) =13577598a(12) =173995382a(13) =1740580398a(14) =16367827293a(15) =223104829665

External references