Number of different forests of unrooted trees, without isolated vertices, on n labeled nodes.
A105784
Number of different forests of unrooted trees, without isolated vertices, on n labeled nodes.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =19a(4) =155a(5) =1641a(6) =21427a(7) =334377a(8) =6085683a(9) =126745435a(10) =2975448641a(11) =77779634571
External references
- oeis: A105784