Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155227
Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =161a(5) =1807a(6) =11923a(7) =74305a(8) =996497a(9) =20101489a(10) =343266000a(11) =7112429890a(12) =240727989195
External references
- oeis: A155227