Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155244
Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =171a(5) =2026a(6) =22295a(7) =155502a(8) =1596524a(9) =35243564a(10) =954802663a(11) =22309276431a(12) =693242750587
External references
- oeis: A155244