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

A155355

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

Terms

    a(0) =1a(1) =4a(2) =13a(3) =28a(4) =49a(5) =171a(6) =1310a(7) =8460a(8) =42491a(9) =242978a(10) =2107793a(11) =27648766a(12) =373047925a(13) =4984501036a(14) =77677934468

External references