Number of ways to place zero or more nonadjacent 2,1 2,2 3,0 3,1 3,3 4,2 4,3 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.

A155435

Number of ways to place zero or more nonadjacent 2,1 2,2 3,0 3,1 3,3 4,2 4,3 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =4a(2) =13a(3) =28a(4) =49a(5) =105a(6) =852a(7) =6079a(8) =29814a(9) =128372a(10) =780418a(11) =9582912a(12) =132900511a(13) =1524452541a(14) =17253579386a(15) =257451880786

External references