Number of rooted 2-dimensional polyominoes with n octagonal cells, with no symmetries removed.
A094169
Number of rooted 2-dimensional polyominoes with n octagonal cells, with no symmetries removed.
Terms
- a(0) =1a(1) =8a(2) =60a(3) =440a(4) =3230a(5) =23688a(6) =173796a(7) =1275240a(8) =9359748a(9) =68708320a(10) =504466468a(11) =3704376384a(12) =27205146592
External references
- oeis: A094169