Number of simple labeled graphs on n nodes with exactly 4 connected components that are trees or cycles.
A215854
Number of simple labeled graphs on n nodes with exactly 4 connected components that are trees or cycles.
Terms
- a(0) =1a(1) =10a(2) =125a(3) =1610a(4) =23597a(5) =394506a(6) =7533445a(7) =163190665a(8) =3971678359a(9) =107502644249
External references
- oeis: A215854