Number of unlabeled Hugenholtz diagrams with n nodes.
A057572
Number of unlabeled Hugenholtz diagrams with n nodes.
Terms
- a(0) =1a(1) =1a(2) =12a(3) =148a(4) =3150a(5) =90075a(6) =3431015a(7) =167013000a(8) =10129020300a(9) =748997001900
External references
- oeis: A057572