Least number of edges in graph containing all trees on n nodes.

A004401

Least number of edges in graph containing all trees on n nodes.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =6a(5) =8a(6) =11a(7) =13a(8) =16a(9) =18

External references