Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,2 5,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155415
Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,0 3,1 4,2 5,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =46a(4) =127a(5) =385a(6) =1900a(7) =9866a(8) =51376a(9) =316958a(10) =2204777a(11) =18653197a(12) =179171339a(13) =1914846570
External references
- oeis: A155415