Number of forests of trees on n or fewer nodes using a subset of labels 1..n, also row sums of triangle A144258.
A144259
Number of forests of trees on n or fewer nodes using a subset of labels 1..n, also row sums of triangle A144258.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =17a(4) =83a(5) =577a(6) =5425a(7) =65221a(8) =959145a(9) =16703045a(10) =336294539a(11) =7687013743a(12) =196668883339
External references
- oeis: A144259