Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155288
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =187a(5) =1099a(6) =9278a(7) =75511a(8) =645474a(9) =7422000a(10) =116915443a(11) =2299714950a(12) =51760679784
External references
- oeis: A155288