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

A155432

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

Terms

    a(0) =1a(1) =4a(2) =10a(3) =19a(4) =31a(5) =90a(6) =468a(7) =2292a(8) =9110a(9) =38413a(10) =235563a(11) =1945805a(12) =17222547a(13) =150113688a(14) =1482231064a(15) =18382767078a(16) =277079737938

External references