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

A155260

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

Terms

    a(0) =1a(1) =7a(2) =25a(3) =55a(4) =130a(5) =1405a(6) =16466a(7) =116148a(8) =894657a(9) =15191483a(10) =400416491a(11) =9046002744a(12) =215811308360

External references