Number of ways to place zero or more nonadjacent 1,0 2,0 2,1 2,2 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.
A155230
Number of ways to place zero or more nonadjacent 1,0 2,0 2,1 2,2 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =249a(5) =2622a(6) =27709a(7) =246241a(8) =3322988a(9) =74905084a(10) =2082119083a(11) =63776107886
External references
- oeis: A155230