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

A155284

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

Terms

    a(0) =1a(1) =13a(2) =37a(3) =73a(4) =309a(5) =2413a(6) =28031a(7) =212649a(8) =2010251a(9) =29604759a(10) =633868196a(11) =15160513746a(12) =396011442436

External references