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

A155247

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =43a(4) =187a(5) =1189a(6) =7473a(7) =55294a(8) =540344a(9) =6609867a(10) =96912191a(11) =1762761733a(12) =39425343425

External references