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

A155321

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =88a(5) =676a(6) =4377a(7) =23168a(8) =128083a(9) =1375195a(10) =16989531a(11) =217989023a(12) =2931139962a(13) =55566047699

External references