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

A155255

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =138a(5) =709a(6) =5288a(7) =35178a(8) =273388a(9) =2852364a(10) =38034180a(11) =614782409a(12) =11580813304a(13) =263078868069

External references