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

A155218

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =64a(4) =604a(5) =5668a(6) =60291a(7) =1139786a(8) =28911749a(9) =917529031a(10) =42684328880

External references