Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.
A155246
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =52a(4) =214a(5) =1321a(6) =8505a(7) =68818a(8) =699514a(9) =8734297a(10) =133231510a(11) =2556155829a(12) =60226747541
External references
- oeis: A155246