Number of series-reduced planted compound windmills with n leaves of 2 colors with no symmetries.
A032174
Number of series-reduced planted compound windmills with n leaves of 2 colors with no symmetries.
Terms
- a(0) =2a(1) =1a(2) =4a(3) =15a(4) =66a(5) =291a(6) =1368a(7) =6555a(8) =32262a(9) =161505a(10) =821280a(11) =4227710a(12) =21996052a(13) =115469442a(14) =610894004a(15) =3253836785a(16) =17434360442a(17) =93907348819a(18) =508194420136
External references
- oeis: A032174