Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 4,1 5,1 polyhexes in any orientation on a planar n X n X n triangular grid.
A155325
Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 4,1 5,1 polyhexes in any orientation on a planar n X n X n triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =37a(4) =133a(5) =535a(6) =2615a(7) =17641a(8) =119940a(9) =924944a(10) =8924108a(11) =102805254a(12) =1407633936a(13) =22958195053a(14) =437437783099
External references
- oeis: A155325