Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
A155237
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =45a(4) =176a(5) =869a(6) =4190a(7) =28277a(8) =212331a(9) =2073991a(10) =22977026a(11) =311395472a(12) =4817775687
External references
- oeis: A155237