Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,1 3,2 3,3 4,1 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
A155371
Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,1 3,2 3,3 4,1 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =28a(4) =49a(5) =110a(6) =920a(7) =6322a(8) =30236a(9) =123737a(10) =790167a(11) =10430919a(12) =142197770a(13) =1546938330a(14) =16600218633a(15) =257429254996
External references
- oeis: A155371