Number of labeled trees on <= n nodes.
A117887
Number of labeled trees on <= n nodes.
Terms
- a(0) =1a(1) =4a(2) =20a(3) =145a(4) =1441a(5) =18248a(6) =280392a(7) =5063361a(8) =105063361a(9) =2463011052a(10) =64380375276
External references
- oeis: A117887