Number of simple labeled graphs on n nodes with exactly 1 connected component that is a tree or a cycle.
A215851
Number of simple labeled graphs on n nodes with exactly 1 connected component that is a tree or a cycle.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =19a(4) =137a(5) =1356a(6) =17167a(7) =264664a(8) =4803129a(9) =100181440a(10) =2359762091a(11) =61937322624
External references
- oeis: A215851