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

A155406

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =61a(5) =275a(6) =1793a(7) =9603a(8) =41441a(9) =206821a(10) =1678073a(11) =16665525a(12) =168175105a(13) =1702776291a(14) =20351416873a(15) =312390331791

External references