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

A155380

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

Terms

    a(0) =1a(1) =4a(2) =10a(3) =19a(4) =40a(5) =120a(6) =445a(7) =2107a(8) =10099a(9) =50833a(10) =296830a(11) =2080084a(12) =17252149a(13) =164656985a(14) =1767665953a(15) =21481633518a(16) =300312864497

External references