Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155287
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =22a(4) =40a(5) =147a(6) =972a(7) =6099a(8) =33889a(9) =206340a(10) =1814635a(11) =22696011a(12) =314005946a(13) =4605664055a(14) =78764798797
External references
- oeis: A155287