Number of labeled rooted trees with n nodes and 2-colored internal (non-leaf) nodes.
A052316
Number of labeled rooted trees with n nodes and 2-colored internal (non-leaf) nodes.
Terms
- a(0) =1a(1) =4a(2) =30a(3) =344a(4) =5370a(5) =106452a(6) =2562182a(7) =72592816a(8) =2367054450a(9) =87320153900
External references
- oeis: A052316