Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155289
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =25a(3) =55a(4) =208a(5) =1150a(6) =9013a(7) =76658a(8) =703883a(9) =8056303a(10) =122331252a(11) =2348850844a(12) =54143239435
External references
- oeis: A155289