Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155226
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =58a(4) =329a(5) =2350a(6) =20015a(7) =218371a(8) =3090717a(9) =58164789a(10) =1393078738a(11) =42785732400
External references
- oeis: A155226