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

A155393

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =88a(5) =374a(6) =1596a(7) =9550a(8) =53268a(9) =321912a(10) =2348995a(11) =21763014a(12) =230932203a(13) =2808007076a(14) =38499914560a(15) =608992059466

External references