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

A155251

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =138a(5) =709a(6) =5384a(7) =34764a(8) =263230a(9) =2819561a(10) =38049276a(11) =603759584a(12) =11166092240a(13) =253333757097

External references