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

A155323

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

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =61a(5) =547a(6) =3879a(7) =20553a(8) =82301a(9) =862099a(10) =11383399a(11) =147116137a(12) =1584915709a(13) =26192809787a(14) =600459150255

External references